Chapter 5 Geometry Vocab

Front

Two lines in the same plane that never intersect

Back

parallel lines

Front

Two lines in the same plane that intersect at right angles

Back

perpendicular lines

Front

A line that cuts across another set of lines (usually parallel)

Back

transversal line

Front

Inside angles formed by two lines cut by a transversal

Back

interior angles

Front

Four outer angles formed by two lines cut by a transversal.

Back

Exterior angles.

Front

Non-adjacent interior angles on opposite sides of the transversal

Back

alternate interior angles

Front

Non-adjacent exterior angles on opposite sides of the transversal

Back

alternate exterior angles

Front

Angles in the same position on two parallel lines with a transversal

Back

corresponding angles

Front

Opposite angles formed by intersecting lines.

Back

Vertical angles.

Front

Two angles that sum to 180 degrees, also called a linear pair.

Back

supplementary angles