Proportions and Similar Polygons

Solve for the unknown in the equivalent ratios.
3/4 = 9/?

• 8
• 10
• 4
• 12

The ratio 5:15 simplifies to...

• 1:3
• 3:1
• 1:5
• 3:5

Solve the proportion.

• 20
• 7
• 22
• 11

You drive 25 miles in one hour. At this rate, how far will you drive in 3 hours?

• 25 miles
• 50 miles
• 125 miles
• 75 miles

What is the similarity statement for the triangle pair?

• ΔXYZ~ΔNEW

• ΔXZY~ΔNWE

• ΔZYX~ΔENW

• ΔYZX~ΔNWE

Two objects that are the same shape but not the same size are _______.

• Congruent
• Vertical
• Similar
• Complementary 

A picture of a school’s mascot is 18 in. wide and 24 in. long. It is enlarged proportionally to banner size. If the width is enlarged to 54 in., what is the length of the banner? 

• 72 in
• 60 in
• 62 in
• 80 in

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

• congruent, proportional 
• proportional, congruent 
• congruent, congruent
• proportional, proportional

The ratio of the side lengths of a triangle is 2:4:8, and its perimeter is 35 cm. Find the length of the longest side.

• 12.86 cm

• 2.5 cm

• 5 cm

• 20 cm

Solve the proportion.

• k=5
• k=3.3333333
• k=60
• k=90