Geometric Proofs

Front

Which symbol means "perpendicular"?

Back

⊥

Front

If X = Y, then X + 5 = Y + 5

Back

Addition POE (Property of Equality)

Front

What additional information is required to prove the 2 triangles are congruent by SAS?

Back

A) The length of one side and the included angle.

Front

Are the triangles congruent, if yes, why?

Back

SSS (Side-Side-Side) Congruence Postulate.

Front

What is the missing statement in the proof?

Back

m∠ABD + m∠ABD = m∠ABD + m∠DBC

Front

What does SAS stand for in triangle congruence?

Back

Side-Angle-Side.

Front

What is the Reflexive Property of Equality?

Back

A quantity is equal to itself (e.g., a = a).

Front

What does SSS stand for in triangle congruence?

Back

Side-Side-Side.

Front

What is the ASA Congruence Postulate?

Back

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

Front

What is the definition of congruent triangles?

Back

Triangles that have the same size and shape.