Proofs of Similar Triangles

Are the triangles similar?

• Yes

• No

State the postulate that proves these triangles are similar.

• SSS

• AA

• SAS

• Not similar

How do these triangles appear to be similar?

• AA

• SAS

• SSS

• Not Similar

How do these triangles appear to be similar?
(Hint: Look for non-labeled parts!)

• AA

• SAS

• SSS

• Not Similar

If two figures are similar, the corresponding sides are ______________.

• equal

• congruent

• proportional

• none of these

Mrs. Ashley used similar triangles to make a design.  Which statement about the triangles in the design must be true?

• They are the same size and shape.

• They are the same size but different shapes.

• They have corresponding angles that are congruent.

• They have corresponding sides that are congruent.

If two figures are similar their angles are______.

• proportional

• congruent

• supplementary

• complementary

When proving these triangles similar, what would you write in for the missing reason?

• Math

• Corresponding sides are proportional

• Corresponding sides are congruent

• SSS similarity postulate

What reasons complete the proof?

• Given, AA Similarity Postulate

• Vertical Angle Theorem, AA Similarity Postulate

• Reflexive Property, SAS Similarity Postulate

• Definition of Angle Bisector, SSS Similarity Postulate

Which is NOT a way to prove triangles similar?

• AA

• SSS

• ASA

• SAS