Angles

Front

What are Alternate Interior Angles?

Back

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

Front

What are Vertical Angles?

Back

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

Front

What are Corresponding Angles?

Back

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

Front

What are Adjacent Angles?

Back

Angles that share a common side and a common vertex but do not overlap.

Front

What are Complementary Angles?

Back

Two angles whose measures add up to 90 degrees.

Front

What are Supplementary Angles?

Back

Two angles whose measures add up to 180 degrees.

Front

If Angle 1 is 40°, what is the measure of its complement?

Back

50°

Front

If Angle 2 is 110°, what is the measure of its supplement?

Back

70°

Front

What is the relationship between Angle 3 and Angle 6 if they are Alternate Exterior Angles?

Back

They are equal when the lines are parallel.

Front

If two angles are vertical, what can we say about their measures?

Back

They are equal.