Geometry - 2-Column Proof Practice

Front

What are vertical angles?

Back

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

Front

Which angle pairs are always congruent?

Back

Vertical angles are always congruent.

Front

What does the Vertical Angles Theorem state?

Back

The Vertical Angles Theorem states that if two angles are vertical angles, then they are congruent.

Front

What is the Transitive Property in geometry?

Back

The Transitive Property states that if angle A is congruent to angle B, and angle B is congruent to angle C, then angle A is congruent to angle C.

Front

What is a linear pair of angles?

Back

A linear pair of angles are two adjacent angles that form a straight line. They are supplementary, meaning their measures add up to 180 degrees.

Front

What is the Reflexive Property?

Back

The Reflexive Property states that any geometric figure is congruent to itself.

Front

What is the Symmetric Property?

Back

The Symmetric Property states that if one figure is congruent to another, then the second figure is congruent to the first.

Front

What is the Angle Addition Postulate?

Back

The Angle Addition Postulate states that if point B lies in the interior of angle AOC, then the measure of angle AOB plus the measure of angle BOC equals the measure of angle AOC.

Front

Back

Front

What is the definition of congruent angles?

Back

Congruent angles are angles that have the same measure.