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

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6-8 Grade 8 Unit 2 Lesson 7

Gradeband

K-5 Math •6-8 Math 9-12 Math

Course

Grade 6 Grade 7 •Grade 8

Unit

Unit 1 •Unit 2 Unit 3 Unit 4 Unit 5 Unit 6 Unit 7 Unit 8 Unit 9

Lesson

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

K-5
6-8
9-12

Grade 6
Grade 7
Grade 8

Accelerated 6
Accelerated 7

Unit 1
Unit 2
Unit 3
Unit 4
Unit 5
Unit 6
Unit 7
Unit 8
Unit 9

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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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

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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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