Angles formed by Transversals A transversal is a line that intersects two or more coplanar lines at different points. Angles that are between the two lines that are cut by the transversal are called interior angles. Angles 2, 4, 5 and 7 are interior angles. Angles that are not interior angles are called exterior angles. Angles 1, 3, 6 and 8 are exterior angles.
Special Angle Pairs formed by Transversals Transversals form special pairs of angles: Corresponding Angles Alternate Interior Angles Alternate Exterior Angles Consecutive Interior Angles