8A: Equations with Angles

Front

What is the definition of complementary angles?

Back

Complementary angles are two angles that add up to 90 degrees.

Front

What is the definition of supplementary angles?

Back

Supplementary angles are two angles that add up to 180 degrees.

Front

What is the value of x if 2x + 10 = 50?

Back

x = 20.

Front

What is the value of x if 3x - 5 = 16?

Back

x = 7.

Front

What is the definition of vertical angles?

Back

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

Front

What is the equation to find the missing angle if one angle is 30 degrees?

Back

The equation is 90 - 30 = x for complementary angles.

Front

What is the equation to find the missing angle if one angle is 120 degrees?

Back

The equation is 180 - 120 = x for supplementary angles.

Front

If two angles are complementary and one angle is 40 degrees, what is the other angle?

Back

The other angle is 50 degrees.

Front

If two angles are supplementary and one angle is 70 degrees, what is the other angle?

Back

The other angle is 110 degrees.

Front

What is the sum of the angles in a triangle?

Back

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