Triangle Proofs

Front

What is the definition of congruent angles?

Back

Congruent angles are angles that have the same measure.

Front

What does CPCTC stand for in triangle proofs?

Back

CPCTC stands for 'Corresponding Parts of Congruent Triangles are Congruent.'

Front

What is the Hypotenuse-Leg (HL) theorem?

Back

The HL theorem states that if the hypotenuse and one leg of a right triangle are congruent to the hypotenuse and one leg of another right triangle, then the two triangles are congruent.

Front

What is the definition of a triangle?

Back

A triangle is a polygon with three edges and three vertices.

Front

What are the three types of triangle congruence postulates?

Back

The three types are SSS (Side-Side-Side), SAS (Side-Angle-Side), and ASA (Angle-Side-Angle).

Front

What is the Angle-Angle (AA) similarity postulate?

Back

If two angles of one triangle are congruent to two angles of another triangle, then the triangles are similar.

Front

What is the definition of vertical angles?

Back

Vertical angles are the angles opposite each other when two lines intersect. They are always congruent.

Front

What is the reflexive property?

Back

The reflexive property states that any geometric figure is congruent to itself.

Front

What is the definition of corresponding sides in triangles?

Back

Corresponding sides are sides in two or more triangles that are in the same relative position.

Front

What is the definition of a right triangle?

Back

A right triangle is a triangle that has one angle measuring 90 degrees.