Geometry Basics: Lines and Angles

Front

Coplanar lines that do not intersect.

Back

Parallel Lines

Front

Noncoplanar lines that are not parallel and do not intersect.

Back

Skew Lines

Front

Planes that do not intersect.

Back

Parallel Planes

Front

A line that intersects two or more coplanar lines at different points.

Back

Transversal

Front

Nonadjacent interior angles that lie on opposite sides of the transversal.

Back

Alternate Interior Angles

Front

Interior angles that lie on the same side of the transversal.

Back

Same Side Interior Angles

Front

Angles that lie on the same side of the transversal and in corresponding positions.

Back

Corresponding Angles

Front

Nonadjacent exterior angles that lie on opposite sides of the transversal.

Back

Alternate Exterior Angles