Lines and Angles 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

Interior angles

Back

Angles inside a shape.

Front

Perpendicular lines:

Back

Intersect at 90 degrees.

Front

Intersecting lines

Back

Two lines that cross at exactly one point.

Front

Transversal definition:

Back

A line that intersects two or more lines.

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, on opposite sides.

Front

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

Back

Vertical angles

Front

Supplementary angles?

Back

Sum measures 180°.