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  5. Lesson 07: Similar Polygons | Unit 2: Dilations, Similarity, And Introducing Slope
Lesson 07: Similar Polygons | Unit 2: Dilations, Similarity, and Introducing Slope

Lesson 07: Similar Polygons | Unit 2: Dilations, Similarity, and Introducing Slope

Assessment

Presentation

Mathematics

8th Grade

Medium

CCSS
6.NS.B.3, 8.G.A.2, HSG.SRT.A.2

+2

Standards-aligned

Created by

Wayground Content

Used 1+ times

FREE Resource

20 Slides • 10 Questions

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21

Multiple Choice

Triangle DEFDEF is a dilation of triangle ABCABC with scale factor 2. In triangle ABCABC , the largest angle measures 8282^\circ . What does the largest angle measure in triangle DEFDEF ?

1

4141^\circ

2

8282^\circ

3

9898^\circ

4

164164^\circ

22

Draw

Draw 2 polygons that are similar but could be mistaken for not being similar. Provide an image of your drawing.

23

Open Ended

Explain why the polygons you drew are similar.

24

Draw

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

25

Open Ended

Explain why the polygons you drew are not similar.

26

Multiple Choice

Question image

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

1
15/7
2
10
3
12
4
20

27

Multiple Choice

Question image

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

1
7.5
2
4.2
3
6.8
4
5.4

28

Multiple Select

A rectangle has dimensions 6 units by 4 units and is similar to quadrilateral ABCDABCD . Select **all** statements that are true.

1

The measure of angle ABCABC is 90 ^\circ .

2

Quadrilateral ABCDABCD is a rectangle.

3

The length of side ABAB is the same as the length of side BCBC .

4

If the length of side ABAB is 9 units, then the length of side BCBC is 7 units.

5

The length of the shortest side of quadrilateral ABCDABCD is 23\frac23 the length of the longest side.

29

Multiple Choice

Question image

Here is triangle ABCABC . Triangle DEFDEF is similar to triangle ABCABC , and the length of EFEF is 5 cm. What are the lengths of sides DEDE and DFDF , in centimeters?

1
DE = 5 cm, DF = 5 cm
2
DE = 2 cm, DF = 6 cm
3
DE = 3 cm, DF = 4 cm
4
DE = 4 cm, DF = 3 cm

30

Multiple Choice

Question image

The two triangles are similar. Find xx .

1
30°
2
90°
3
120°
4
60°
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