Angle Vocabulary

Front

Corresponding Angles

Back

Angles that are in the same position on two parallel lines in relation to a transversal. These angles are always congruent.

Front

Consecutive Interior Angles

Back

Angles that are on the same side of the transversal and inside the two lines. These angles are aways supplementary.

Front

Consecutive Exterior Angles

Back

Angles that are on the same side of the transversal and outside the two lines. These angles are always supplementary.

Front

Alternate Interior Angles

Back

Angles that are on opposite sides of the transversal and inside the two lines. These angles are always congruent.

Front

Alternate Exterior Angles

Back

Angles that are on opposite sides of the transversal and outside the two lines. These angles are always congruent.

Front

Vertical Angles

Back

Angles that are opposite each other when two lines cross. They are always equal.

Front

Linear Pair

Back

A pair of adjacent angles (beside each other) formed when two lines intersect. The sum of the angles in a linear pair is always supplementary.