Vertical Angles Corresponding Angles Alternate Interior Angles Or Alternate Exterior Angles. Corresponding angles form are supplementary angles if the transversal perpendicularly intersects two parallel lines. Also like with interior angles the above exterior angles are equal when a transversal line crosses 2 parallel lines.
If two parallel lines are cut by a transversal corresponding angles must be congruent. Learn how to identify corresponding angles alternate interior angles alternate exterior angles and consecutive interior angles in this free math video tut. Corresponding and alternate angles are formed when a straight line passes through two parallel lines.
Also like with interior angles the above exterior angles are equal when a transversal line crosses 2 parallel lines.
Similarly interior angles are supplementary if the two lines are parallel. As mentioned earlier a pair of vertical angles will always be congruent. Corresponding angles form are supplementary angles if the transversal perpendicularly intersects two parallel lines. If two parallel lines are cut by a transversal corresponding angles must be congruent.