Determining If Similar Figures

The triangles are similar, solve for the missing length of the larger triangle. A proportion would be helpful to set up.

• 8

• 12.5

• 18

• 24

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.

What is the Scale Factor from ABCD (original) to MNOP (new)?

• 2/3

• 3/2

• 2

• 3

Figure JKLM is similar to figure PQRS.

Which proportion must be true for

these figures?

• 
• 
• 
• 

• A

• B

• C

• D

Are the two figures similar?

• yes

• no

• 4m
• 5m
• 3m
• 4.5m

Figure ABCDE is similar to figure VWXYZ.

What is the Scale Factor from Shape A (original) to shape B (new)?

• 1

• 2

• 3

• 4