Define Alternate Interior Angles

C and f are alternate interior angles.

Define alternate interior angles. Alternate interior angles are angles that are on the inside of the two lines and on the opposite sides of the transversal. Vertically opposite angles are equal. Alternate interior angles are created where a transversal crosses two usually parallel lines.

More about alternate interior angles. Each pair of these angles are inside the parallel lines and on opposite sides of the transversal. If two parallel lines are cut by a transversal the alternate interior angles are congruent.

Alternate interior angles are formed when a transversal passes through two lines. The angles are both exterior or both interior to the two lines. Alternate angles are equal.

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. Alternate interior angles. Notice that the two alternate interior angles shown are equal in measure if the lines pq and rs are parallel.

If the two lines are parallel then the alternate interior angles are congruent. American heritage dictionary of the english language fifth edition. When two parallel lines are intersected by a transversal the pair of angles formed inside the parallel lines is called alternate interior angles.

Try this drag an orange dot at a or b. D and e are alternate interior angles. 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.