Similar Figures Vocabulary

These two triangles are similar to each other. What is measure is angle R?

Mathematical Equivalence

ON

These two triangles are similar to each other. What is measure is angle Y?

Mathematical Equivalence

ON

True or False: These two triangles are NOT similar.

• True

• False

Complete each proportion.
CB / DM  =  AC / ?

• BM

• MA

• BC

• AD

The two right triangles below are similar. What is x, the missing side length in triangle DEF? 

• 3.75

• 9.75

• 10

• 12

Review the picture.  Find the missing side measurement in the picture using a proportion.

• w = 18 m

• w = 6 m

• 6 m

• w = 0.16 m

Find the missing area. 

• 0

• 12

• 24

• 30

This symbol stands for ...

• is corresponding to

• is proportional to

• is congruent to

• is similar to

What is true about the sides of similar figures?

• Corresponding sides are proportional.

• Corresponding sides are congruent.

• Opposite sides are proportional.

• Opposite sides are congruent.

What is true about the angles of similar figures?

• Corresponding angles are proportional.

• Complementary angles are proportional.

• Corresponding angles are congruent.

• Complementary angles are congruent.