Alternate Interior And Exterior Angles Definition. Exterior means outside the parallel lines. Transversal so that a pair of alternate exterior angles is congruent then the two lies are parallel.
Interior angles are created in the space inside the parallel lines. A theorem is a proven statement or an accepted idea that has been shown to be trueThe converse of this theorem which is basically the opposite is also a proven statement. Alternate exterior angles are created in the space outside the parallel lines on alternating sides.
Alternate interior angles lie between the lines cut by the transversal.
Alternate exterior angles are the pair of angles that lie on the outer side of the two parallel lines but on either side of the transversal line. There are thus two pairs of these angles. Alternate interior angles are used to prove triangles are congruent by SAS ASA AAS. In the above-given figure you can see two parallel lines are intersected by a transversal.
