Review for Ratios and Proportions and Similar Polygons

Solve the proportion.

• 18

• 3

• 2

• 9

Find the scale factor of ΔMNP to ΔDEF

Two polygons are similar. The perimeter of the first polygon is 72 inches. The perimeter of the second polygon is 90 inches. What is the scale factor of the first polygon to the second polygon?

• 72 : 90

• 90 : 72

• 4 : 5

• 5 : 4

In similar Polygons, corresponding sides are ___ and corresponding angles are ___. (Fill in the blanks)

• congruent, proportional 

• proportional, congruent 

• congruent, congruent

• proportional, proportional

The ratio 5:15 simplifies to...

• 1:3

• 3:1

• 1:5

• 3:5

Which is NOT equivalent to 3:5?

• 15:25

• 9:15

• 21:28

• 30:50

Solve the proportion.

• 20

• 7

• 22

• 11

What is the similarity statement for the triangle pair?

• ΔXYZ~ΔNEW

• ΔXZY~ΔNWE

• ΔZYX~ΔENW

• ΔYZX~ΔNWE

Pentagon JKLMN is similar to pentagon VWXYZ.
What is the measurement of angle X?

• 30 degrees

• 60 degrees

• 150 degrees

• 120 degrees

• P = 85 feet

• P = 106.25 feet

• P = 68 feet