Congruent and Similar Triangles

Are the triangles similar?

• Yes
• No

When figures are similar, their corresponding angles are__________________.

• congruent

• proportional

• acute

• obtuse

When figures are similar, their corresponding sides are__________________.

• congruent

• proportional

• parallel

• perpendicular

If two triangles are similar, then the ratios of the corresponding _____________ are equal.

• sides

• vertices

• parts

• angles

Complete each proportion.
CB / DM  =  AC / ?

• BM
• MA
• BC
• AD

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.

Angles that are in the same position in two different figures are called ____________________ angles.

• right

• acute

• corresponding

• similar

When two figures are congruent, their __________ angles are congruent.

• similar

• corresponding

• base

• proportional

When two figures are congruent, their corresponding sides are____________.

• perpendicular

• parallel

• congruent

• proportional

Name the postulate, if possible, that makes the triangles congruent.

• SAS
• ASA
• AAS
• Not Possible