Parallel Lines Cut by a Transversal (Algebra)

Front

What are parallel lines?

Back

Parallel lines are lines in a plane that never meet. They are always the same distance apart.

Front

What is a transversal?

Back

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

Front

What are corresponding angles?

Back

Corresponding angles are angles that are in the same position at each intersection where a transversal crosses two lines.

Front

What are alternate interior angles?

Back

Alternate interior angles are pairs of angles on opposite sides of the transversal but inside the two lines.

Front

What are alternate exterior angles?

Back

Alternate exterior angles are pairs of angles on opposite sides of the transversal but outside the two lines.

Front

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

Back

When two parallel lines are cut by a transversal, corresponding angles are equal.

Front

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

Back

When two parallel lines are cut by a transversal, alternate interior angles are equal.

Front

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

Back

When two parallel lines are cut by a transversal, alternate exterior angles are equal.

Front

If two lines are cut by a transversal and the corresponding angles are equal, what can be concluded about the lines?

Back

If the corresponding angles are equal, the lines are parallel.

Front

If two lines are cut by a transversal and the alternate interior angles are equal, what can be concluded about the lines?

Back

If the alternate interior angles are equal, the lines are parallel.