Angle Relationships

Front

What are corresponding angles?

Back

Angles that are in the same position on different parallel lines when a transversal crosses them.

Front

What are alternate interior angles?

Back

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

Front

What are alternate exterior angles?

Back

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

Front

What are vertical angles?

Back

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

Front

If two angles are supplementary, what is their relationship?

Back

Their measures add up to 180 degrees.

Front

If Angle 1 is 100 degrees, what is the measure of its corresponding angle?

Back

100 degrees; corresponding angles are equal.

Front

If Angle 1 is 100 degrees, what is the measure of Angle 2 if they are alternate interior angles?

Back

100 degrees; alternate interior angles are equal.

Front

If Angle 4 is 105 degrees, what is the measure of Angle 5 if they are alternate interior angles?

Back

105 degrees; alternate interior angles are equal.

Front

If Angle 1 is 100 degrees, what is the measure of Angle 8 if they are alternate exterior angles?

Back

100 degrees; alternate exterior angles are equal.

Front

If Angle 1 is 100 degrees, what is the measure of Angle 2 if they are supplementary?

Back

80 degrees; supplementary angles add up to 180 degrees.