Geometry Definition Of Alternate Interior Angles

L a r is an alternate interior angle with a r n i a r is an alternate interior angle with a r o.

Geometry definition of alternate interior angles. Notice that the two alternate interior angles shown are equal in measure if the lines pq and rs are parallel. When a transversal crosses two other lines it creates an exterior and interior for the parallel lines. Alternate interior angles are created where a transversal crosses two usually parallel lines.

D and e are alternate interior angles. The transversal crosses through the two lines which are coplanar at separate points. Angle 4 and angle 8 are also alternate interior angles.

So there are actually two pairs. Try this drag an orange dot at a or b. More about alternate interior angles.

When two lines are crossed by another line called the transversal alternate interior angles are a pair of angles on the inner side of each of those two lines but on opposite sides of the transversal. Each pair of these angles are inside the parallel lines and on opposite sides of the transversal. Alternate exterior angles are created in the space outside the parallel lines on alternating sides.

Alternate interior angles alternate interior angles are the pair of angles on the inner side of the two parallel lines but on the opposite side of the transversal. When two lines are crossed by another line the transversal a pair of angles on the inner side of each of those two lines but on opposite sides of the transversal are called alternate interior angles. C and f are alternate interior angles.

Pairs of exterior angles on opposite sides of the transversal. If two parallel lines are cut by a transversal the alternate interior angles are congruent. Definition of alternate interior angles when two lines are cut by a transversal the pair of angles formed interior of the two lines and on the opposite of the transversal is called alternate interior angles.