Similar Figures

True or False: These two triangles are NOT similar.

• True

• False

All angles in similar figures are congruent.  

• True

• False

Are the following similar? Why or why not?

• Yes. All pairs of corresponding angles are congruent.

• No, the corresponding angles are not equal.

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

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.

Which statement is true?

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

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