The angle pairs are on alternate sides of the transversal and they are on.
Definition of alternate interior angles in math.
Also find the definition and meaning for various math words from this math dictionary.
Alternate interior angles theorem.
Learn what is alternate interior angles.
In the figure above click on other angle pair to visit both pairs of alternate exterior angles in turn.
There are thus two pairs of these 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.
Illustrated definition of alternate interior angles.
Play with it below try dragging the points.
Interior means inside the parallel lines.
When two lines are crossed by another line the transversal a pair of angles on the inner side of each.
In this example these are two pairs of 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.
Exterior means outside the parallel lines.
Alternate interior angles theorem.
When the two lines are parallel alternate exterior angles are equal.
When two lines are crossed by another line the transversal a pair of angles on the outer side of those two lines but on opposite sides of the transversal are called alternate exterior angles.
To help you remember.
There are thus two pairs of these angles.
With each pair of alternate interior angles both angles are inside the parallel lines and on opposite alternate sides of the transversal.
Once you can recognize and break apart the various parts of parallel lines with transversals you can use the alternate interior angles theorem to speed up your work.
Alternate exterior angles.
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.
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The alternate interior angles theorem states if two parallel lines are cut by a transversal then the pairs of alternate interior angles are congruent.
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