Adjacent, Supplementary, Complementary Angles, Vertical Angles

Front

What are complementary angles?

Back

Two angles that add up to 90 degrees.

Front

What are supplementary angles?

Back

Two angles that add up to 180 degrees.

Front

What are vertical angles?

Back

Angles that are opposite each other when two lines intersect; they are always equal.

Front

If angle A and angle B are complementary, and angle A measures 30°, what is the measure of angle B?

Back

60°

Front

If angle C and angle D are supplementary, and angle C measures 70°, what is the measure of angle D?

Back

110°

Front

What is the relationship between vertical angles?

Back

Vertical angles are equal.

Front

If m∠1 = 45°, what is m∠2 if ∠1 and ∠2 are vertical angles?

Back

45°

Front

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

Back

90°

Front

What equation would you use to find x if two angles are complementary?

Back

x + y = 90°.

Front

If m∠3 = 150°, what is m∠4 if ∠3 and ∠4 are vertical angles?

Back

150°.