Angle Relationships Level 1

Front

What are Alternate Exterior Angles?

Back

Angles that are on opposite sides of a transversal and outside the two lines. They are congruent when the lines are parallel.

Front

What are Supplementary Angles?

Back

Two angles whose sum is 180 degrees.

Front

What is the sum of Supplementary Angles?

Back

180 degrees.

Front

What are Alternate Interior Angles?

Back

Angles that are on opposite sides of a transversal and inside the two lines. They are congruent when the lines are parallel.

Front

What is the definition of Corresponding Angles?

Back

Angles that are in the same position on two parallel lines in relation to a transversal. They are congruent.

Front

What are Same-side Interior Angles?

Back

Angles that are on the same side of the transversal and inside the two lines. They are supplementary when the lines are parallel.

Front

What is the relationship between Vertical Angles?

Back

Vertical angles are opposite angles formed by two intersecting lines and are always congruent.

Front

What is a Transversal?

Back

A line that intersects two or more lines at different points.

Front

If two parallel lines are cut by a transversal, what can be said about the Alternate Interior Angles?

Back

They are congruent.

Front

If two angles are supplementary, what is their relationship?

Back

Their measures add up to 180 degrees.