Parallel Lines Vocab

Front

Parallel lines:

Back

Lines in the same plane that do not intersect.

Front

Corresponding angles?

Back

Two angles in the same position when parallel lines are cut by a transversal.

Front

Alternate interior angles are a pair of angles on the inner side of two lines cut by a transversal, but on opposite sides of the transversal.

Back

A pair of angles on the inner side of two lines cut by a transversal, but on opposite sides of the transversal.

Front

Alternate exterior angles:

Back

A pair of angles on the outer side of two lines cut by a transversal, but on opposite sides of the transversal.

Front

Vertical angles are the angles opposite each other when two lines cross.

Back

Vertical angles

Front

Supplementary angles?

Back

Sum measures 180 degrees.

Front

Adjacent angles with non-common sides as opposite rays. Hint: Supplementary!

Back

Linear Pair

Front

Opposite congruent angles formed by intersecting lines.

Back

Vertical Angles

Front

Angles in the same place on different lines

Back

Corresponding Angles

Front

Angles between 2 lines (interior) on opposite sides of a transversal are congruent when lines are parallel.

Back

Alternate Interior Angles