Big Ideas Geometry chap 3

Front

What are alternate interior angles?

Back

Angles that are on opposite sides of a transversal and inside the two lines.

Front

What are supplementary angles?

Back

Two angles that add up to 180°.

Front

What are complementary angles?

Back

Two angles that add up to 90°.

Front

What is the corresponding angles theorem?

Back

If two parallel lines are cut by a transversal, then each pair of corresponding angles is equal.

Front

What are vertical angles?

Back

Angles that are opposite each other when two lines intersect; they are always equal.

Front

What are alternate exterior angles?

Back

Angles that are on opposite sides of a transversal and outside the two lines.

Front

What is the same side interior angles theorem?

Back

If two parallel lines are cut by a transversal, then the same side interior angles are supplementary.

Front

What is the relationship between angle 1 and angle 2 if they are corresponding angles?

Back

They are equal in measure.

Front

If two angles are supplementary, what is their relationship?

Back

Their measures add up to 180°.

Front

If two angles are complementary, what is their relationship?

Back

Their measures add up to 90°.