Methods of Similarity Proof

Give the reason for similarity.

• AA
• SAS
• SSS
• AAS

Solve for x

• 100
• 1
• 0.1
• 10

Give the reason for similarity

• AA
• SAS
• SSS
• RHS

Are the triangles similar? If so, why?

• Similar.  SAS
• Similar.  AA
• Similar. SSS
• Not Similar

Are the triangles similar? If so, why?

• Similar.  SSS
• Similar.  SAS
• Similar.  AA
• Not Similar.

Write the similarity statement for the triangle pair

• ΔXYZ~ΔNEW
• ΔXZY~ΔNWE
• ΔZYX~ΔENW
• ΔYZX~ΔNWE

Are the triangles similar? If so, what similarity test is used?

• Similar.  SAS
• Similar.  AA
• Similar.  SSS
• Not Similar

The triangles are similar by...

• SAS
• AA
• ASA
• SSS

The triangles are similar by...

• SAS
• AA
• ASA
• SSS

Are these triangles similar?
Angles in Triangle 1:  40⁰,60⁰, and 80⁰
Angles in Triangle 2:  40⁰,50⁰, and 90⁰

• Yes
• No
• There is not enough information to decide.