Complementary, Supplementary, and Vertical Angles

Front

What are complementary angles?

Back

Two angles that add up to 90°.

Front

What are supplementary angles?

Back

Two angles that add up to 180°.

Front

What are vertical angles?

Back

Angles that are opposite/across from each other when lines intersect.

Front

If one angle is 30°, what is its complementary angle?

Back

60°.

Front

If one angle is 110°, what is its supplementary angle?

Back

70°.

Front

What is the equation to find a complementary angle of x?

Back

90 - x.

Front

What is the equation to find a supplementary angle of x?

Back

180 - x.

Front

If ∠A and ∠B are vertical angles, what can we say about their measures?

Back

∠A = ∠B.

Front

If two angles are supplementary and one angle measures 75°, what is the measure of the other angle?

Back

105°.

Front

If ∠1 and ∠2 are complementary and ∠1 = 45°, what is ∠2?

Back

45°.