Similar Figures and Proportions

Solve the proportion.

• k=5
• k=3.3333333
• k=60
• k=90

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

• Congruent
• Vertical
• Similar
• Complementary 

Are the following similar? Why or why not?

• Yes
• No, the corresponding angles are not equal.
• No, the ratios of the corresponding sides are not equal.

The pair of figures is similar. Find the missing side.

• x = 22
• x = 2
• x = 16
• x = 8

In an animal shelter, the ratio of dogs to cats is 5 to 3. There are 25 dogs. Write and solve a proportion to find the number of cats.

• c=15
• c=18
• c=21
• c=16

All corresponding angles in similar figures are congruent (equal).  

• True
• False

Find missing side

• 5
• 7
• 9
• 11

Gwen scans a photo that is 4 in. wide by 6 in. tall into her computer. If she scales the height down to 5 in., how wide should the similar photo be?

• 3 in
• 3.3 in.
• 4 in
• 1 in

Are the triangles similar?

• Yes
• No

The pair of figures is similar. Find the missing side.

• x = 12
• x = 3
• x = 40
• x = 4