Similar and Congruent Triangles Proofs

In similar triangles, corresponding sides are ___________.

• similar

• congruent

• overlapping

• proportional

Which of the following is NOT a valid reason to prove congruent triangles?

• SSA

• ASA

• SAS

• SSS

Which of the following cannot be used to prove triangles congruent?

• HL

• AA

• SSS

• SAS

Determine whether the triangles are similar(name the postulate or theorem you used).

• SSS similar

• AA similar

• SAS similar

Determine whether the triangles are similar or not. If so, state how they are similar.

• Yes, by AA Similarity

• Yes, by SAS Similarity

• Yes, by SSS Similarity

• No, not similar

Complete each proportion.
CB / DM  =  AC / ?

• BM

• MA

• BC

• AD

Complete each proportion.
AB / BM  =  ? / CD

• BC

• AC

• MD

• MC

Complete the similarity statement.
ABC ~ ___

• ZYX

• XZY

• YZX

• XYZ

2 triangles are similar if _____________.

• their angles are congruent.

• their sides are congruent.

• their areas are equal.

• their perimeters are equal.

How many pairs of congruent angles in 2 triangles are needed to prove the 2 triangles are similar?

• 2 or 3

• 1

• 0

• only 3