Ch 4 Theorems/Def

Front

What does the Alternate Interior Angles Theorem state?

Back

If two parallel lines are cut by a transversal, then the pairs of alternate interior angles are congruent.

Front

What is the Reflexive Property of Congruence?

Back

A geometric figure is congruent to itself.

Front

What can be concluded if triangles ABE, EDA, and EDC are shown to be congruent?

Back

All three triangles are congruent.

Front

What does the Angle-Angle-Side (AAS) Theorem state?

Back

If two angles and a non-included side of one triangle are congruent to two angles and a non-included side of another triangle, then those triangles are congruent.

Front

What does the Exterior Angle Theorem state?

Back

The measure of an exterior angle of a triangle is equal to the sum of the measures of the two non-adjacent interior angles.

Front

Define congruent triangles.

Back

Triangles that have the same size and shape, meaning their corresponding sides and angles are equal.

Front

What is the definition of a transversal?

Back

A line that intersects two or more lines at different points.

Front

What is the definition of supplementary angles?

Back

Two angles that add up to 180 degrees.

Front

What is the definition of complementary angles?

Back

Two angles that add up to 90 degrees.

Front

What does the Transitive Property of Congruence state?

Back

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