In this example, many angles are equal and form pairs of angles with unique names. Click on each name below to see it highlighted: Now play with it here. Try dragging the points, and …

Free parallel angles math topic guide, including step-by-step examples, free practice questions, teaching tips and more!

If two lines are cut by a transversal and the alternate interior angles are congruent, the lines are parallel.

When any two parallel lines are intersected by another line called a transversal, many pairs of angles are formed. While some angles are congruent (equal), the others are supplementary.

The following terms are used to refer to the angle pairs formed by a transversal and a pair of parallel lines. Corresponding angles - angles that occupy the same relative position when a …

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 …

When a transversal line intersects two parallel lines, it creates specific angle relationships that are always consistent. This tutorial explores these relationships with diagrams, definitions, and …

We give angle properties names to help solve problems with angles in parallel lines. For example an “alternate angle”, an alternate angle looks like a Z shape as shown below. Alternate angles …

Theorem: When parallel lines are cut by a transversal, then the pairs of corresponding angles are congruent, the pairs of alternate interior angles are congruent, and the pairs of alternate …

Learn about angles in parallel lines. Understand how to prove lines are parallel. Read about proving lines are parallel using parallel line rules...