Geometry: Chapter 7 Test Review "Proportions & Similarity"

Given the choice between doing an oral and a written report, 18 of the 28 students chose to do an oral report. Find the ratio of written to oral reports.

• 5 : 9

• 9 : 5

• 9 : 14

• 14 : 9

A model of a lighthouse has diameter 8 inches and height 18 inches. If the actual diameter of the lighthouse is 20 feet, find its actual height.

• 30 ft

• 35 ft

• 45 ft

• 50 ft

Tags

CCSS.7.G.A.1

CCSS.7.RP.A.2

CCSS.7.RP.A.3

The three sides of a triangle are in the ratio 2:4:5. If the shortest side of the triangle is 4 meters long, find the perimeter.

• 17 m

• 22 m

• 32 m

• 40 m

Find the polygon that is similar to ABCD.

• 
• 
• 
• 

If $\Delta ABC\sim\Delta DEF$  , find  $m\angle C\ .$  

• 54

• 59

• 67

• 69

Name the theorem or postulate that can be used to prove that these triangles are similar.

• AA Similarity

• SAS Similarity

• SSA Similarity

• SSS Similarity

Quadrilateral JKLM  $\sim$  quadrilateral WXYZ, JK = 15, LM = 10, XY = 6, and WX = 9. Find KL

• 8

• 10

• 11

• 12

Find LM.

• 16

• 17

• 18

• 20

A 6-foot-tall fence post cast a 2 $\frac{1}{2}$  -foot shadow. At the same time, a nearby clock tower cast a 35-foot shadow. What is the height of the tower?

• 37  $\frac{1}{2}$  ft

• 71 ft

• 78 ft

• 84 ft

Find CE 

• 25

• 26

• 27

• 28