Grade 7 math (This lesson is to be covered in 2 periods) General Outcome: Use direct and indirect measurement to solve problems. Specific Outcome: Develop and apply a formula for determining the area of triangles and parallelograms.

lesson 11.2 triangles answers provides a comprehensive and comprehensive pathway for students to see progress after the end of each module. With a team of extremely dedicated and quality lecturers, lesson 11.2 triangles answers will not only be a place to share knowledge but also to help students get inspired to explore and discover many ...

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7 ft 40.5 ft 6 ft T Lesson 7-3 Proving Triangles Similar 385 Geology Ramon places a mirror on the ground 40.5 ft from the base of a geyser. He walks backwards until he can see the top of the geyser in the middle of the mirror.At that point, Ramon’s eyes are 6 ft above the ground and he is 7 ft from the image in the mirror.
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Sample number: 0.024050 (5 significant figures) Not significant leftmost zeros in front of nonzero digits: 0.024050 Significant a nonzero digit: 0.024050 zeros between two nonzero digits: 0.024050 zeros at the end of a number to the right of the decimal point: 0.024050 after reading Lesson 3.1, answer the following questions. Scientific notation 1.

Welcome to IXL's grade 10 maths page. Practise maths online with unlimited questions in more than 200 grade 10 maths skills.

More Practice Your Skills with Answers SECOND EDITION DDAA2MPYSA_008_fm.indd iAA2MPYSA_008_fm.indd i 11/7/09 12:08:00 PM/7/09 12:08:00 PM LESSON 5: Discovering What it Means to be Similar TrianglesLESSON 6: Discovering What it Means to be Similar Triangles Continued LESSON 7: Perspective Art ProjectLESSON 8: Movement In Linear Graphs Day 1 of 3LESSON 9: Movement in Linear Graphs Day 2 of 3LESSON 10: Movement in Linear Graphs day 3 of 3

Section 5.4 Using Similar Triangles 209 Tell whether the triangles are similar. Explain. 1. 28° 80° 28° 71° y° x° 2. 66° 24° y° x° Indirect measurement uses similar ﬁ gures to ﬁ nd a missing measure when it is difﬁ cult to ﬁ nd directly. Exercises 5–8 EXAMPLE 2 Using Indirect Measurement
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8-5 Indirect Measurement LESSON 1. Use similar triangles to find the height of the tower. 2.Use similar triangles to find the height of the man. h 224.1 ft 44.82 ft 27 ft h! 5.4 feet h 48 yd 10 ft 6.2 ft h! 29.76 yd 3. On a sunny day, a 6.5-foot-tall ladder casts a shadow that is 19.5 feet long. A man who is 6.2 feet tall is painting next to ...

Geometry Worksheets. We cover a wide range of geometry concepts. We focus primarily on angles, shapes, perimeter and area. For detailed geometry worksheets, see the geometry packs.

You can also compare students' measurements of the same objects to see if they got the same measurement. Let's say, you had 20 students measure the height of the doorway. You should get 20 very similar answers (unless they are the sharing type then you'll get exactly the same answers) and any different answers can be quickly identified. Explain whether the triangles are similar. Two angles in the large triangle are congruent to two angles in the smaller triangle, so the third pair of angles must also be congruent, which makes the triangles similar. 70° + 36° + m∠3 = 180° m∠3 = 74° 8.G.1.5 Use informal arguments to establish facts about the angle sum and exterior angle of

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Here's a simple geometry lesson covering similar triangles and more. It is called How Tall is the Flagpole, and goes into the Common Core Math practice 4 and 5. High School teacher Chuck Pack has his 9th grade students use geometry to measure the height of the school flagpole. This adds the lesson to the recipient’s Nearpod library. Or send via email account: Send. Twitter; Facebook; Copy . Insert code: Ctrl + C or ⌘ + C to copy link ... Learn what a triangle is, the properties of triangles, and examples of the types of triangles. We go over sides, angles, altitude, and parts of a triangle in this video. 7 minutes All levels English

The measurement is precise to within 0.5 millimeter. So, a measurement of 22 millimeters could be 21.5 to 22.5 millimeters. 18. The measuring tool is divided into 1 2-inch increments. Thus, the measurement is precise to within 1 2 1 2 or 1 4 inch. Therefore, the measurement could be between 16 1 2 1 4 16 1 4 inches and 16 1 2 1 4 16 3 4 inches. 19. P.5 Similar triangles and indirect measurement. JWK. Share skill

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5. _12 = 20 3 _ 5 15 _ 30 1 _ 2 Pages 13–14 Lesson 1-1 Independent Practice 1. 60 mi/h 3 3.5 m/s 5. Sample answer: about \$0.50 per pair 7. 510 words 9 a. 20.04 mi/h b. about 1.5 h 13. Sometimes; a ratio that compares two measurements with different units is a rate, such as _2 miles 15. 10 minutes. \$6.40; Sample answer: The unit rate for the ... Unformatted text preview: Instructional Cycle 3 #N/A #N/A Date Lesson Check once GUIDED NOTES are complete Graded Work 4.05 Using 11/2/2020 Triangle Similarity Theorems 4.05 Quiz 11/3/2020 4.06 Right Triangle Similarity 4.06 Quiz 11/4/2020 4.07 Parallelograms 4.07 Quiz Check once GRADED WORK is complete Optional iXL Practice Optional iXL Practice P7 iXL P5 iXL P.14 Proofs involving similarity ... Unit 3 – Using Congruence and Similarity with Triangles Page 3 Find the length of BC. _____ Example A fire hydrant that is 1.5 feet high casts a shadow that is 2.5 feet long. At the same time of day, a lamppost casts a shadow 15 feet long. What is the height of the lamppost? _____ Area of = .5 x 3 x 2 = 3 units2 Area of = .5 x 9 x 6 = 27 units2

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2016-2017 Congruency, Similarity, Right Triangles, and Trigonometry – Answer Key 5 MAFS.912.G-CO.1.2 EOC Practice Level 2 Level 3 Level 4 Level 5 represents transformations in the plane; determines transformations that preserve distance and angle to those that do not uses transformations to develop definitions of angles, perpendicular Similarity And Indirect Measurement Course 3 Lesson 5 8 When A 6 Ft PPT. Presentation Summary : Similarity and Indirect Measurement COURSE 3 LESSON 5-8 When a 6-ft student casts a 17-ft shadow, a flagpole casts a shadow that is 51 ft long. Find the height

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Lesson 5 Extra Practice Similar Triangles and Indirect Measurement 1. A road sign casts a shadow 14 meters long, while a nearby tree casts a shadow 27.8 meters long. If the road sign is 3.5 meters high, how tall is the tree? 6.95 m 2. Use the diagram to find the distance across Catfish Lake. Assume the triangles are similar. 3 km 3. Trigonometry Lesson Objectives Assignment Objectives Law of Sines Find missing angle and side measures of a triangle using the law of sines. Use the law of sines to solve indirect measure problems. Ambiguity and Area of a Triangle Find the area of a triangle using two sides and the included angle.

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Lesson 9: Similar Figures. 5-9 Guided Notes; Congruence and Similarity Match-Up Cards; Similar Figures Puzzle; Homework (due:): 5-9 Practice; Lesson 10: Indirect Measurement . 5-10 Guided Notes; Use your Guided Notes to follow along with the VIDEO! Homework (due: ): 5-10 PracticeLesson 133. Catch-up and review day. You can go back and redo a lesson that caused you trouble, and you can use the activity below to help you review. Find the similar triangles. Try questions 1, 2, 3, 8, and 9. Congruent means the same – the same size and the same shape. Similar means the same shape but a different size. This is an outdoor project with 5 stations for students to acquire hands on experience with indirect measuring using different tools, right triangle trig, and similar triangles. Station 1: The mirror method Students use a mirror to create similar triangles and measure the height of a tall object.

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• Lesson 2.5 Algebraic Proof • Lesson 5.7 Pythagorean Theorem • Lesson 1.6 Distance Formula/Midpoint Formula • Partitioning a Segment • Assessment 2.5 Algebraic Proofs 5.7 Special Right Triangles. 1.6 Midpoint formula. 1.6 Distance Formula. 3 . 8/21 – 8/25 The GLM 50 CX offers multiple modes; 3 indirect measurement modes including multi-surface area. A built-in inclinometer allows the user to determine the angle of pitch and confirm when the tool is level. Includes stakeout measurement that pinpoints recurring marks along a line, e.g. every 6 in.

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Free student math practice. Change answer; Math 8-5 Indirect Measurement LESSON 1. Use similar triangles to find the height of the tower. 2.Use similar triangles to find the height of the man. h 224.1 ft 44.82 ft 27 ft h! 5.4 feet h 48 yd 10 ft 6.2 ft h! 29.76 yd 3. On a sunny day, a 6.5-foot-tall ladder casts a shadow that is 19.5 feet long. A man who is 6.2 feet tall is painting next to ... Sep 16, 2019 · There is a difference between a direct and an indirect democracy. In a direct democracy, individuals make all the decisions themselves. For example, they will vote on proposed laws.

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(8) Lesson 7.5 - Similar Triangles and Indirect measurement 1. Course 3, Lesson 7-5 1. Determine whether the pair of polygons is similar. Explain. 2. The pair of polygons is similar. Determine the missing side measure. 3. A greeting card is 8 inches by 6 inches, but it will have to be cut to fit in an envelope.This model highlights the measurement aspect of addition and is a distinctly different representation of the operation from the model presented in the previous lesson. The order (commutative) property is also introduced. At the end of the lesson, students are encouraged to predict sums and to answer puzzles involving addition. LESSON Practice A 5-7 Indirect Measurement Lesson 10 Homework Practice Indirect Measurement 1. The triangles below are similar. What is the value of x? 36 yd 45 yd 189 yd x yd 3. The triangles below are similar. How far is Dora's house from Micala's house? 4.8 mi 2.8 mi 3.2 mi Jim's house Dora's house Tran's house Micala's house 5. The

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38 Holt Mathematics Practice C 7-5 Indirect Measurement LESSON 1. Use similar triangles to find the height of the tower. 2. Use similar triangles to find the height of the man. h 224.1 ft 44.82 ft 27 ft h 5.4 feet h 48 yd 10 ft 6.2 ft h 29.76 yd 3. On a sunny day, a 6.5-foot-tall ladder casts a shadow that is 19.5 feet long. Jun 19, 2015 · Determine if the triangles are similar: (a) (b) A building casts a 100−foot shadow, while a 20 foot flagpole next to the building casts a 24 foot shadow. How tall is the building? Explain in your own words what it means for triangles to be similar. Review Answers . Either 5 inches or 7 inches. A right triangle cannot be an obtuse triangle. Jun 19, 2015 · Determine if the triangles are similar: (a) (b) A building casts a 100−foot shadow, while a 20 foot flagpole next to the building casts a 24 foot shadow. How tall is the building? Explain in your own words what it means for triangles to be similar. Review Answers . Either 5 inches or 7 inches. A right triangle cannot be an obtuse triangle.

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Objective: This lesson is designed to help you discover the properties of similar triangles and to specifically understand the concept of proportionality. You will be determining the general conditions required to verify or prove that two triangles are similar. 1. List all Triangle Congruence Postulates that you know. There are five! lesson 11.2 triangles answers provides a comprehensive and comprehensive pathway for students to see progress after the end of each module. With a team of extremely dedicated and quality lecturers, lesson 11.2 triangles answers will not only be a place to share knowledge but also to help students get inspired to explore and discover many ...

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Using Indirect Measurement. CJ is 5 feet tall and casts a 7-foot shadow. At the same time, a tree casts a 14-foot shadow. The triangles formed are similar. Find the height of the tree. Solution. You can use a proportion to find the height of the tree. Step 1 Write a proportion. Step 2 Substitute given values. Step 3 Solve the proportion. x = 10 Similar triangles and indirect measurement BB.6. Perimeters of similar figures BB.7. Similarity rules for triangles BB.8. Similar triangles and similarity ...

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We explain Using Similar Triangles to Make Indirect Measurements with video tutorials and quizzes, using our Many Ways(TM) approach from multiple teachers. This lesson explains why similar triangles can be used to make indirect measurements, and provides an example.Indirect Measurement Essential Question How can you compare lengths of three objects to put them in order? Lesson 9.2 Measurement and Data— 1.MD.A.1 MATHEMATICAL PRACTICES MP1, MP3, MP4 FOR THE TEACHER • Read the clues. Have children use the MathBoard to draw each clue. Then have children draw the strings in order from shortest to longest.

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Q. A tree is 72 feet tall and has a shadow that is 12 feet long. A nearby tree has a shadow of 5 feet. How tall is the tree?TOP: Lesson 6.5 Prove Triangles Similar by SSS and SAS KEY: similar | triangle | AAA BLM: Knowledge NOT: 978-0-618-65613-4 60. ANS: B PTS: 1 DIF: Level A REF: HLGM0644 TOP: Lesson 6.5 Prove Triangles Similar by SSS and SAS KEY: side | corresponding | proportional BLM: Knowledge NOT: 978-0-618-65613-4 61. ANS: a. Answers will vary. Check ... 7.8 Triangle Proportionality Answers 1. 14.4 2. 21.6 3. 16.8 4. 45 5. 2: 3 6. 3: 5 7. 2: 3 is the ratio of the segments created by the parallel lines, 3: 5 is the ratio of the similar triangles. 8. Yes 9. No 10. Yes 11. No 12. Yes 13. No 14. 1.5b 15. 1: 1 C K ­ 1 2 G e o m e t r y C o n c e p t s 1 2

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Dec 10, 2014 · You can use similar triangles and proportions to measure difficult things. Indirect measurement makes the seemingly impossible, possible!! Real Life Example Completed The Pair of Skateboard Ramps. Here is the original problem once again. Reread the problem and underline any important information. 9. If triangles ADE and ABC shown in the figure. to the right are similar, what is the value of x? a) 4 b) 5 c) 6 d) 8 e) 10. 10. (ABC is similar to (XYZ. What is the length of segment ? a) 5 cm b) 7.5 cm c) 8 cm d) 9 cm e) 10 cm. 11. (HIJ is similar to (STR. What is the perimeter of (STR?

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Mar 14, 2009 · A second method involves mirrors. This one works because of the law of reflection: Angle of incidence=angle of reflection. Because those angles are equal we can set up two similar triangles, if there is a mirror on the ground and a person stands in a spot such that they see the top of the flagpole. Check the answer by substituting it back into the equation solved in step 5 and by making sure it makes sense in the context of the problem. Answer the question with a complete sentence. We will start geometry applications by looking at the properties of triangles. 8-5 Indirect Measurement LESSON 1. Use similar triangles to find the height of the tower. 2.Use similar triangles to find the height of the man. h 224.1 ft 44.82 ft 27 ft h! 5.4 feet h 48 yd 10 ft 6.2 ft h! 29.76 yd 3. On a sunny day, a 6.5-foot-tall ladder casts a shadow that is 19.5 feet long. A man who is 6.2 feet tall is painting next to ...

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A triangle which has all its three angles are of equal measurement i.e. 60° is called an equiangular triangle. The sides of an equiangular triangle are all the same length (congruent), and so an equiangular triangle is really the same thing as an equilateral triangle.

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An interior angle of a triangle is an angle that is inside the triangle, and is formed by two sides of the triangle. Angles A, B, and C are the interior angles. The three interior angles of a triangle always have a sum of 180°. Write an equation to find an unknown interior angle in a triangle. m∠A + m∠B + m∠C = 180° Lesson 5 Homework Practice DATE PERIOD I Similar Triangles and Indirect Measurement In Exercises 1-4, the triangles are similar. Write a proportion and solve the problem. 1. Lesson 9: Similar Figures. 5-9 Guided Notes; Congruence and Similarity Match-Up Cards; Similar Figures Puzzle; Homework (due:): 5-9 Practice; Lesson 10: Indirect Measurement . 5-10 Guided Notes; Use your Guided Notes to follow along with the VIDEO! Homework (due: ): 5-10 Practice

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5. 6. Two triangles are similar. The sides of the first triangle are 7, 9, and 11. The smallest side of the second triangle is 21. Find the perimeter of the second ... 31°, and 180 2 62 5 118°. LeSSon 14-1 71. a. A B C x y b. outside c. Yes, ABC is an obtuse triangle, and the altitudes of an obtuse triangle intersect outside the triangle. d. (11, 29) 72. (3, 1) 73. a. 4° b. 36° c. 50° d. 54° e. 126° 74. D 75. Sample answer. Select one side of the triangle. Using the two vertices of that side, find an ...

Session 5 Indirect Measurement and Trigonometry Learn how to use the concept of similarity to measure distance indirectly, using methods involving similar triangles, shadows, and transits. Apply basic right-angle trigonometry to learn about the relationships among steepness, angle of elevation, and height-to-distance ratio. Lesson 5 Homework Practice Similar Triangles and Indirect Measurement 1. TREES How tall is Yori? 3. LAKE How deep is the water 31.5 feet from the shore? 2 ft 31.5 ft 6 ft d ft E B D C A 2. TREASURE HUNT How far is it from the hut to the gold coins? 15 yd 18 yd 12 yd x yd Gold Coins Shovel Hut Silver Coins Jewels 4. SURVEYING How far is it ... Explain whether the triangles are similar. Two angles in the large triangle are congruent to two angles in the smaller triangle, so the third pair of angles must also be congruent, which makes the triangles similar. 70° + 36° + m∠3 = 180° m∠3 = 74° 8.G.1.5 Use informal arguments to establish facts about the angle sum and exterior angle of

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indirect measurement when surveying land or measuring unreachable spaces. Working in groups, assign students a practical situation such as: 1) planning a triangular- shaped garden to be broken in equal-sized portions; 2) use similar triangles to find the This lesson plan for exploring fractals is designed so 4th through 8th grade students can work independently and be assessed innovatively. It conforms to the 1989 NCTM standards, and provides links to other fractal sites. Contents: Why study fractals? Making fractals: Sierpinski Triangle, Sierpinski Meets Pascal, Jurassic Park Fractal, Koch ...

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RD Sharma Solutions for Class 10 Mathematics CBSE, 7 Triangles. All the solutions of Triangles - Mathematics explained in detail by experts to help students prepare for their CBSE exams. Nov 10, 2019 · Similar triangles are two triangles that have the same angles and corresponding sides that have equal proportions. Proving similar triangles refers to a geometric process by which you provide evidence to determine that two triangles have enough in common to be considered similar. Using simple geometric theorems, you will be able to easily prove ... Mar 14, 2009 · A second method involves mirrors. This one works because of the law of reflection: Angle of incidence=angle of reflection. Because those angles are equal we can set up two similar triangles, if there is a mirror on the ground and a person stands in a spot such that they see the top of the flagpole.

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Nov 14, 2011 · GeometryDiscovering An Investigative Approach Practice Your Skills with Answers DG4PSA_894_fm.qxd 11/1/06 11:16 AM Page i

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geometric measurements (length, area, volume) in K{12. Let us make sure that it is so this time around. The major deviation of the CCSSM from the usual geometry standards occurs in grade 8 and high school. There is at present an almost total disconnect in TSM between the geometry of middle school and that of high school. Congruence

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Lesson 5 Problem-Solving Practice Similar Triangles and Indirect Measurement 1. HEIGHT Eduardo is 6 feet tall and casts a 12-foot shadow. At the same time, Diane casts an 11-foot shadow. How tall is Diane? 2. LIGHTING If a 25-foot-tall house casts a 75-foot shadow at the same time that a streetlight casts a 60-foot shadow, how tall is the ...Looking Ahead: A classic proof of the Pythagorean Theorem and the use of the geometric means, the similar triangles created when the altitude to the hypothesis is drawn. The study of indirect measurement will continue to be used in our right triangle unit. Similarity is also key to theorems in circle geometry. Aspects that Worked. Example 5 Indirect Measurement Plan In shadow problems, you can assume that the angles formed by the Sun’s rays with any two objects are congruent and that the two objects form the sides of two right triangles. Since two pairs of angles are congruent, the right triangles are similar by the AA Similarity Postulate.

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Geometry Unit 8 Right Triangles and Trigonometry 7 Example 4A: Classify Triangles Determine whether 9, 12, and 15 can be the measures of the sides of a triangle. If so, classify the triangle as acute, right, or obtuse. Justify your answer. Guided Practice 4A: Classify Triangles Determine whether the set of numbers 7, 8, and 14 Practice Indirect Measurement Answerssimilar triangles to find the height of the lamppost. 2. Use similar triangles to find the height of the man. 8 ft 4 ft h 12 ft h "6 feet h 20 ft 5 ft 10 ft h " 10 feet 3. A 3-foot-tall boy looks into a mirror at the county fair.The mirror makes a person appear shorter.The boy LESSON Practice A Indirect Page ...

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Section 5.4 Using Similar Triangles 209 Tell whether the triangles are similar. Explain. 1. 28° 80° 28° 71° y° x° 2. 66° 24° y° x° Indirect measurement uses similar ﬁ gures to ﬁ nd a missing measure when it is difﬁ cult to ﬁ nd directly.

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4-9 Using Similar Figures Additional Example 3: Estimating with Indirect Measurement City officials want to know the height of a traffic light. Estimate the height of the traffic light. 27.25 15 = 48.75 h Write a proportion. Use compatible numbers to estimate. 5 3 ≈ Simplify. 50 h 5h ≈ 150 The traffic light is about 30 feet tall. 27.25 ft ... Area and perimeter: triangles Area and perimeter: trapezoids Area and perimeter: triangles (with fractions) Area and perimeter: trapezoids (with fractions) Pythagorean theorem Circles: Find the circumference Circles: Find the area Circles: Find the circumference and area Circles: Find the radius Use similar triangles to answer each question. 3. ... Reteaching 5-8 Similarity and Indirect Measurement Course 3Chapter 5 Lesson 5-8 Reteaching 17

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Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube. Section 5.4 Using Similar Triangles 209 Tell whether the triangles are similar. Explain. 1. 28° 80° 28° 71° y° x° 2. 66° 24° y° x° Indirect measurement uses similar ﬁ gures to ﬁ nd a missing measure when it is difﬁ cult to ﬁ nd directly.

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Proportional Segments Theorem, Triangle Proportionality Theorem, or its Converse. State the theorem used. 49. Explain how you know that each pair of triangles are similar. 50. Use indirect measurement to calculate the missing distance. 51. Minh wanted to measure the height of a statue. She lined herself up with the statue’s shadow so that the ...

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• Discussion of activity- by having the students share their examples, answers and reasoning with the entire class or in small groups, the intrapersonal intelligence is included as students share their personal insights into their work. • Activity with Example 5 and 6- hand out grid paper. Ask students to draw a coordinate plane and Learn to draw a fractal Sierpinski triangle and combine yours with others to make a bigger fractal triangle. The Sierpinski triangle activity illustrates the fundamental principles of fractals – how a pattern can repeat again and again at different scales and how this complex shape can be formed by simple repetition.