Similar Triangles Proportional Sides

Are the triangles similar?

• Yes

• No

Are the triangles similar?

• Yes

• No

Are the triangles similar by angle-angle similarity?

• Yes

• No

• Maybe so

Which triangles are similar to triangle A?

• B

• C

• Both

• None

Are these figures similar?

• yes

• no

The triangles are similar, solve for the question mark.

• 8

• 12.5

• 18

• 24

Complete each proportion.
CB / DM  =  AC / ?

• BM

• MA

• BC

• AD

Complete each proportion.
AB / BM  =  ? / CD

• BC

• AC

• MD

• MC

Determine if the triangles are similar. Justify.

• Yes, by SSS.

• Yes, by SAS. Scale Factor is 1:2.

• Yes, by SAS. Scale Factor is 3:1.

• No, not similar.

Choose the similarity statement for the triangles.

• ΔMNL ∼ ΔOPQ

• ΔNOM ∼ ΔPQL

• ΔLMN ∼ ΔPQO

• ΔMLN ∼ ΔPQO