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6-8 Grade 8 Unit 2 Lesson 7

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K-5 Math •6-8 Math 9-12 Math

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Lesson 1 Lesson 2 Lesson 3 Lesson 4 Lesson 5 Lesson 6 •Lesson 7 Lesson 8 Lesson 9 Lesson 10 Lesson 11 Lesson 12 Lesson 13

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IM K-5 Math
IM 6-8 Math
IM 9-12 Math

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Unit 2, Lesson 7

Similar Polygons

Grade 8

Practice

Problem 1

Student Task Statement

Triangle is a dilation of triangle with scale factor 2. In triangle , the largest angle measures . What does the largest angle measure in triangle ?

Lesson 7 Resources

Student Materials Student Materials in Spanish

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Problem 2

Student Task Statement

Draw 2 polygons that are similar but could be mistaken for not being similar. Explain why they are similar.

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Problem 3

Student Task Statement

Draw 2 polygons that are not similar but could be mistaken for being similar. Explain why they are not similar.

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Problem 4

Student Task Statement

These 2 triangles are similar. Find side lengths and . Note: the 2 figures are not drawn to scale.

<p>Two triangles. First, sides 9, b, 21. Second, sides 3, 5, a.</p><br>

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Problem 5

ForLesson 3: Dilations with No Grid

Student Task Statement

Jada claims that is a dilation of using as the center of dilation.

What are some ways you can convince Jada that her claim is not true?

<p>Point A, angle B C D and angle image B prime, C prime, D prime.</p>

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Problem 6

ForLesson 8: Rotation Patterns

Student Task Statement

Draw a horizontal line segment .
Rotate segment counterclockwise around point . Label any new points.
Rotate segment clockwise around point . Label any new points.
Describe a transformation on segment you could use to finish building a square.

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