Adjacent, Vertical, Complementary, Supplementary Angles

Front

What are complementary angles?

Back

Complementary angles are two angles whose measures add up to 90 degrees.

Front

What are supplementary angles?

Back

Supplementary angles are two angles whose measures add up to 180 degrees.

Front

What are vertical angles?

Back

Vertical angles are the angles opposite each other when two lines intersect. They are always equal.

Front

What are adjacent angles?

Back

Adjacent angles are two angles that share a common side and a common vertex but do not overlap.

Front

If angle A is 30 degrees, what is the measure of its complementary angle?

Back

60 degrees (90 - 30 = 60).

Front

If angle B is 120 degrees, what is the measure of its supplementary angle?

Back

60 degrees (180 - 120 = 60).

Front

If two angles are complementary and one angle measures 25 degrees, what is the measure of the other angle?

Back

65 degrees (90 - 25 = 65).

Front

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

Back

105 degrees (180 - 75 = 105).

Front

Are vertical angles always equal?

Back

Yes, vertical angles are always equal.

Front

If angle 1 and angle 2 are adjacent and angle 1 measures 45 degrees, what is the maximum measure angle 2 can have if they are supplementary?

Back

135 degrees (180 - 45 = 135).