Solving For Missing Angles

Front

What is a complementary angle?

Back

Two angles that add up to 90 degrees.

Front

What is a supplementary angle?

Back

Two angles that add up to 180 degrees.

Front

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

Back

60 degrees.

Front

If one angle is 120 degrees, what is its supplementary angle?

Back

60 degrees.

Front

Solve for x: x + 30 = 90

Back

x = 60.

Front

Solve for x: x + 45 = 180

Back

x = 135.

Front

What is the sum of angles in a triangle?

Back

180 degrees.

Front

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

Back

65 degrees.

Front

If two angles are supplementary and one angle is 110 degrees, what is the other angle?

Back

70 degrees.

Front

Solve for x: 2x + 30 = 90

Back

x = 30.