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Geo. Chapter 8 Study Guide Similarity

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Last updated almost 2 years ago
18 questions
8.1 Similar Polygons
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8.2 Proving Triangle SImilarity by AA
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8.3 Proving Triangle Similarity by SSS and SAS
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8.4 Proportionality Theorems
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Question 1
1.

Find the scale factor. Then list all pairs of congruent angles and write the ratios of the corresponding side lengths in a statement of proportionality.

Question 2
2.

Find the scale factor. Then list all pairs of congruent angles and write the ratios of the corresponding side lengths in a statement of proportionality.

Careful to look at the orientation!

Question 3
3.

The polygons are similar.
Find the value of x.

Question 4
4.

Decide whether the two polygons are similar. Explain your reasoning.

Question 5
5.

Decide whether the two polygons are similar. Explain your reasoning.

Question 6
6.

Determine whether the triangles are similar. If they are, write a similarity statement. Explain your reasoning on the "show your work" screen.

Question 7
7.

Determine whether the triangles are similar. If they are, write a similarity statement. Explain your reasoning on the "show your work" screen.

Question 8
8.

Show that the triangles are similar and write a similarity statement.

Question 9
9.

A cell tower casts a shadow that is 72 feet long, while a nearby tree that is 27 feet tall casts a shadow that is 6 feet long. How tall is the tower?

Question 10
10.
Use the SSS Similarity Theorem or the SAS Similarity Theorem to show that the triangles are similar and to write a similarity statement. Explain your reasoning.

Type in which Theorem proves similarity and write the similarity statements on the "show your work" screen.

12. _______
13. _______
Question 11
11.

Find the value of x that makes Triangle ABC similar to Triangle DEF.

Question 12
12.

The side lengths of △LMN are 20, 8x, and 60. The side lengths of △RST are 25, 50, and 15x. Is it possible that the triangles are similar? Explain.

Question 13
13.

△ABC is an isosceles triangle that has an angle with a measure of 50°. △DEF is an isosceles triangle that has an angle with a measure of 40°. Is it possible that the triangles are similar? Explain.

Question 14
14.
Determine whether AB is parallel to CD. Write "parallel" or "not parallel" and show work to verify.



17. _______
18. _______
Question 15
15.

Find the length of YB.

Question 16
16.

Find the length of AB.

Question 17
17.

Find the length of AB.

Question 18
18.

Find the distance AC between First Street and Third Street.