Angle Relationships

Front

What is the relationship between two angles that add up to 90 degrees?

Back

Complementary angles are two angles whose measures add up to 90 degrees.

Front

What is the relationship between two angles that add up to 180 degrees?

Back

Supplementary angles are two angles whose measures add up to 180 degrees.

Front

What do you call angles that are opposite each other when two lines intersect?

Back

Vertical angles are the angles opposite each other when two lines intersect.

Front

What is the term for angles that share a common side and vertex but do not overlap?

Back

Adjacent angles are two angles that share a common side and a common vertex.

Front

What is the relationship between angles that are on the same side of the transversal and inside the two lines?

Back

Alternate interior angles are the angles that lie on opposite sides of the transversal but inside the two lines.

Front

What is the relationship between angles that are on the same side of the transversal and outside the two lines?

Back

Alternate exterior angles are the angles that lie on opposite sides of the transversal but outside the two lines.

Front

What do you call angles that are in the same position on two parallel lines cut by a transversal?

Back

Corresponding angles are the angles that are in the same position on two parallel lines cut by a transversal.

Front

If two angles are complementary and one angle measures 39 degrees, what is the measure of the other angle?

Back

The other angle measures 51 degrees.

Front

If two angles are supplementary and one angle measures 110 degrees, what is the measure of the other angle?

Back

The other angle measures 70 degrees.

Front

What is the sum of the measures of vertical angles?

Back

Vertical angles are equal, so their measures are the same.