Geometry Proofs Review

Front

What is the SAS (Side-Angle-Side) Congruence Postulate?

Back

If two sides and the included angle of one triangle are congruent to two sides and the included angle of another triangle, then the two triangles are congruent.

Front

What is the SSS (Side-Side-Side) Congruence Postulate?

Back

If all three sides of one triangle are congruent to all three sides of another triangle, then the two triangles are congruent.

Front

What is the ASA (Angle-Side-Angle) Congruence Postulate?

Back

If two angles and the included side of one triangle are congruent to two angles and the included side of another triangle, then the two triangles are congruent.

Front

What is the Hypotenuse-Leg Theorem?

Back

In a right triangle, if the hypotenuse and one leg of one triangle are congruent to the hypotenuse and one leg of another triangle, then the two triangles are congruent.

Front

What does the Reflexive Property state?

Back

Any geometric figure is congruent to itself.

Front

What is the Transitive Property of Congruence?

Back

If two figures are congruent to a third figure, then they are congruent to each other.

Front

What is CPCTC?

Back

CPCTC stands for 'Corresponding Parts of Congruent Triangles are Congruent.' It is used after proving triangles are congruent.

Front

What is the Vertical Angles Theorem?

Back

Vertical angles are always congruent.

Front

What additional information is needed for triangles to be congruent by SAS?

Back

The included angle must be known.

Front

What additional information is needed for triangles to be congruent by SSS?

Back

All three sides must be known.