Angle Relationships

Front

Back

100°

Front

Back

80°

Front

Back

120°

Front

What are complementary angles? Options: Angles that add up to 180°, Angles that add up to 90°, Angles that are equal to each other, Angles that are opposite of each other when lines intersect.

Back

Angles that add up to 90°

Front

What are supplementary angles?

Back

Angles that add up to 180°

Front

What are vertical angles?

Back

Angles that are opposite of each other when lines intersect

Front

Is it possible to find the complement angle of 103°?

Back

Not possible.

Front

What is the supplement angle to 42°?

Back

138°

Front

These are Complementary angles. Find x.

Back

15

Front

If angle ∠ABD is 67°, what is ∠DBC?

Back

23°