Similar Triangles and Proportional Lengths

How do these triangles appear to be similar?

• AA

• Ratio of two sides and an included angle equal

• Three sides proportional

• Not Similar

Choose the similarity statement for the triangles.

• ΔMNL ∼ ΔOPQ

• ΔNOM ∼ ΔPQL

• ΔLMN ∼ ΔPQO

• ΔMLN ∼ ΔPQO

Which condition to prove these triangles to be similar?

• AA

• Ratio of two sides and an included angle equal

• Three sides proportional

• Not Similar

• A
• B
• C
• D

• (1)

• (2)

• (3)

• (4)

Given ∆ABC ~ ∆LMN, what is the length of segment AC?

• 11

• 12

• 22

• 24

How long is side x?

• 3

• 1.5

• 8

• 2/3

The following triangles are similar, which of the answers below would represent their proportions?

• 
• 
• 
• 

• A

• B

• C

• D

• E

Complete each proportion.
CB / DM  =  AC / ?

• BM

• MA

• BC

• AD