Transversal

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

Corresponding angles are pairs of angles that are in similar positions at each intersection where a transversal crosses two lines.

Alternate interior angles are pairs of angles that lie between two lines and on opposite sides of a transversal.

Corresponding angles can be identified as angles that occupy the same relative position at each intersection.

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

Alternate exterior angles are pairs of angles that lie outside two lines and on opposite sides of a transversal.

The sum of the interior angles of a triangle is always 180 degrees.

Interior angles are formed inside a shape, while exterior angles are formed outside a shape.

If two parallel lines are cut by a transversal, then the alternate interior angles are equal.

Consecutive interior angles are pairs of angles that lie on the same side of the transversal and between the two lines.