Parallel Lines cut by a Transversal Review

Front

What are parallel lines?

Back

Lines in a plane that never meet and are always the same distance apart.

Front

What is a transversal?

Back

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

Front

Define vertical angles.

Back

Angles that are opposite each other when two lines intersect; they are always congruent.

Front

What are corresponding angles?

Back

Angles that are in the same position at each intersection where a transversal crosses two lines; they are congruent if the lines are parallel.

Front

What are alternate interior angles?

Back

Angles that lie between two lines and on opposite sides of a transversal; they are congruent if the lines are parallel.

Front

What are alternate exterior angles?

Back

Angles that lie outside two lines and on opposite sides of a transversal; they are congruent if the lines are parallel.

Front

Define adjacent angles.

Back

Two angles that share a common vertex and a common side but do not overlap.

Front

What is a linear pair of angles?

Back

A pair of adjacent angles whose non-common sides form a straight line; they are supplementary.

Front

Back

Front

What is the relationship between consecutive interior angles when two parallel lines are cut by a transversal?

Back