Solving Problems using Angle Relationships

Front

What is the sum of the angles in a triangle?

Back

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

Front

What is a complementary angle?

Back

Complementary angles are two angles whose sum is 90 degrees.

Front

What is a supplementary angle?

Back

Supplementary angles are two angles whose sum is 180 degrees.

Front

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

Back

The complementary angle is 60 degrees.

Front

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

Back

The supplementary angle is 60 degrees.

Front

What is the relationship between vertical angles?

Back

Vertical angles are equal to each other.

Front

Solve for y: 2y + 30 = 90

Back

y = 30.

Front

Solve for x: 3x + 15 = 180

Back

x = 55.

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.