Angle Relationships & Equations

Front

What are supplementary angles?

Back

Angles that add up to 180°.

Front

What is the complement angle to 30°?

Back

60°.

Front

What are vertical angles?

Back

Angles that are opposite each other when two lines intersect.

Front

What is the sum of complementary angles?

Back

90°.

Front

What is the sum of supplementary angles?

Back

180°.

Front

If one angle is 70°, what is its complement?

Back

20°.

Front

If two angles are supplementary and one angle is 90°, what is the other angle?

Back

90°.

Front

What are adjacent angles?

Back

Angles that share a common side and vertex.

Front

If ∠1 and ∠2 are vertical angles, what can we say about their measures?

Back

They are equal.

Front

Solve for x: 2x + 10 = 60.

Back

x = 25.