Difference Between Alternate Interior Angles And Alternate Exterior Angles. When two lines are crossed by a transversal the opposite angle pairs on the outside of the lines are alternate exterior angles. Alternate exterior angles are created in the space outside the parallel lines on alternating sides.
Exterior angles are also created by a transversal line crossing 2 straight lines. Interior angles are created in the space inside the parallel lines. When the two lines intersected by the transversal are parallel corresponding angles are congruent alternate interior angles are congruent alternate exterior angles are congruent and.
Alternate exterior angles are created in the space outside the parallel lines on alternating sides.
Look at the blue lines demonstrating the shape - the Z may be back to front as in the second example but the principle. They are supplementary both angles add up to 180 degrees. Angles that are in the area between the parallel lines like angle 2 and 8 above are called interior angles whereas the angles that are on the outside of the two parallel lines like 1 and 6 are called exterior anglesAngles that are on the opposite sides of the transversal are called alternate angles eg. Alternate exterior angles are created in the space outside the parallel lines on alternating sides.