Geo - Triangle Proofs

Front

What do rigid motions preserve?

Back

Rigid motions preserve angle measure and side lengths.

Front

What is the third reason for triangle congruence?

Back

SAS (Side-Angle-Side) is the third reason for triangle congruence.

Front

Are the two triangles congruent? If yes, how do you know?

Back

Yes, they are congruent. Reason: C.

Front

What is the fourth reason for triangle congruence?

Back

Vertical Angles.

Front

Which statement and reason is correct for the proof shown?

Back

Front

What does SAS stand for in triangle congruence?

Back

SAS stands for Side-Angle-Side, a criterion for triangle congruence.

Front

What does ASA stand for in triangle congruence?

Back

ASA stands for Angle-Side-Angle, a criterion for triangle congruence.

Front

What does SSS stand for in triangle congruence?

Back

SSS stands for Side-Side-Side, a criterion for triangle congruence.

Front

What does AAS stand for in triangle congruence?

Back

AAS stands for Angle-Angle-Side, a criterion for triangle congruence.

Front

What are vertical angles?

Back

Vertical angles are the angles opposite each other when two lines intersect, and they are always congruent.