Geometry Proofs

Front

What are Alternate Interior Angles?

Back

Angles that are on opposite sides of a transversal and inside the two lines it intersects. They are congruent when the lines are parallel.

Front

What is the Reflexive Property of Congruence?

Back

A property stating that any geometric figure is congruent to itself.

Front

What does it mean to bisect an angle?

Back

To split an angle into two equal parts.

Front

What does it mean to bisect a segment?

Back

To split a segment into two equal parts.

Front

What are Vertical Angles?

Back

Angles that are opposite each other when two lines intersect. They are always congruent.

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 is the Alternate Exterior Angles Theorem?

Back

States that if two parallel lines are cut by a transversal, then the alternate exterior angles are congruent.

Front

What is the Linear Pair Postulate?

Back

If two angles form a linear pair, then they are supplementary.

Front

What is the definition of congruent angles?

Back

Angles that have the same measure.