Angle Relationships

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

What are vertical angles?

Back

Angles that are opposite of each other when lines intersect.

Front

If m∠1 = 30°, what is m∠3 if they are vertical angles?

Back

30°.

Front

If two angles are complementary and one angle is 40°, what is the other angle?

Back

50°.

Front

If two angles are supplementary and one angle is 70°, what is the other angle?

Back

110°.

Front

What is the sum of the angles in a triangle?

Back

180°.

Front

What is the measure of each angle in a right triangle?

Back

One angle is 90°, and the other two angles add up to 90°.

Front

If two angles are equal, what type of angles are they?

Back

They are called congruent angles.

Front

What is the relationship between adjacent angles?

Back

Adjacent angles share a common side and vertex.