Solving for Angle Measurements

Front

What is the supplement of an angle?

Back

The supplement of an angle is what, when added to the angle, equals 180 degrees.

Front

If an angle measures 108°, what is its supplement?

Back

72°

Front

What is the formula to find the missing angle in a triangle?

Back

The sum of the angles in a triangle is always 180 degrees.

Front

If ∠ABC measures 60°, what is the measure of the other two angles if one is x?

Back

The other angle must be 120° (180° - 60° = 120°).

Front

What is the value of x if ∠BDA measures 31° and the other angle is x?

Back

x = 180° - 31° = 149°.

Front

What is the definition of a complementary angle?

Back

Two angles are complementary if their measures add up to 90 degrees.

Front

If an angle measures 20°, what is its complement?

Back

70°

Front

What is the value of x if the angles are 60° and x?

Back

x = 30° (90° - 60° = 30°).

Front

What is the relationship between supplementary angles?

Back

Supplementary angles add up to 180 degrees.

Front

If one angle is 162°, what is the other angle if they are supplementary?

Back

18°.