Angle Relationships

Front

What are vertical angles?

Back

Vertical angles are the angles opposite each other when two lines intersect. They are always equal in measure.

Front

What are adjacent angles?

Back

Adjacent angles are two angles that share a common side and a common vertex but do not overlap.

Front

What are complementary angles?

Back

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

Front

What are supplementary angles?

Back

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

Front

If angle a and angle b are adjacent angles, what can be said about their relationship?

Back

Adjacent angles share a common side and vertex, and they do not overlap.

Front

If angle a is 30 degrees, what is the measure of its complementary angle?

Back

The complementary angle is 60 degrees, since 30 + 60 = 90.

Front

If angle a is 120 degrees, what is the measure of its supplementary angle?

Back

The supplementary angle is 60 degrees, since 120 + 60 = 180.

Front

How can you identify vertical angles in an intersecting line diagram?

Back

Vertical angles are formed by the intersection of two lines and are located opposite each other.

Front

What is the relationship between two angles that are both complementary to the same angle?

Back

If two angles are both complementary to the same angle, they are supplementary to each other.

Front

Can two angles be both adjacent and supplementary?

Back

Yes, two angles can be adjacent and supplementary if they share a common side and their measures add up to 180 degrees.