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GeoGebra Lesson

Alternate Exterior and Alternate Interior Angles

Author:Maureen Norton, ckneller

Topic:Angles

Explore angle relationships in parallel lines: alternate interior and alternate exterior angles

Move the points around.

Explore! Discover!

What is one pair of alternate interior angles in the figure above? Remember, you will need 3 points to identify an angle.

What is one pair of alternate exterior angles in the figure above. Remember, you will need 3 points to identify an angle.

Alternate interior angles are always

Select all that apply

A
Equal.
B
Add to 180 degrees

Check my answer (3)

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