Alternate Interior Angles Equation

To find exterior angles look in the space above and below the crossed lines.

Alternate interior angles equation. One way to find the alternate interior angles is to draw a zig zag line on the diagram. This concept introduces students to alternate interior angles and how to use them to determine whether or not lines are parallel. To find alternate exterior angles look at that outside space for each crossed line on different sides of the transversal.

The theorem states that if a transversal crosses the set of parallel lines the alternate interior angles are congruent. 4 5 and 3 6. In the above diagrams d and e are alternate interior angles.

The alternate interior angles theorem states that. Interior angles transversal parallel lines and pairs of angles vertical angles corresponding angles alternate exterior angles consecutive interior angles angles on a straight line angles around a point degrees angle congruent angles geometry index. Which are alternate exterior angles.

Angle a and 56 degrees form a straight angle so we know that a 56 180. Angle a and 156 degrees are alternate interior angles and so since the lines cut by the transversal are parallel we. How to identify alternate interior angles.

When two parallel lines are cut by a transversal the resulting alternate interior angles are congruent. We hope you said 1 2 7 and 8 are the exterior angles. Which are exterior angles.

If the lines are parallel then the alternate.