Angle Relationships

Front

What are vertical angles?

Back

Angles that are opposite of each other when lines intersect.

Front

If ∠COB is 124°, what is ∠BOD? How are they related?

Back

∠BOD is 56°, and they are supplementary.

Front

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

Back

Not possible.

Front

What are complementary angles?

Back

Angles that add up to 90°.

Front

What are supplementary angles?

Back

Angles that add up to 180°.

Front

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

Back

They are equal.

Front

If ∠A + ∠B = 90°, what type of angles are ∠A and ∠B?

Back

They are complementary angles.

Front

If ∠A + ∠B = 180°, what type of angles are ∠A and ∠B?

Back

They are supplementary angles.

Front

What is the complement of 15°?

Back

75°.

Front

What is the supplement of 75°?

Back

105°.