Interior Angles of Triangles

Front

What is the sum of the interior angles of a triangle?

Back

The sum of the interior angles of a triangle is 180 degrees.

Front

What are supplementary angles?

Back

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

Front

What are complementary angles?

Back

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

Front

If one angle of a triangle is 70 degrees, what is the sum of the other two angles?

Back

The sum of the other two angles is 110 degrees.

Front

Solve for x: x + 50 = 180

Back

x = 130

Front

If two angles are supplementary and one angle measures 120 degrees, what is the measure of the other angle?

Back

The other angle measures 60 degrees.

Front

What is the measure of the missing angle in a triangle if the other two angles are 40 degrees and 60 degrees?

Back

The missing angle measures 80 degrees.

Front

Solve for x: 3x + 30 = 180

Back

x = 50

Front

What is the relationship between the angles in a right triangle?

Back

In a right triangle, one angle is 90 degrees, and the sum of the other two angles is 90 degrees.

Front

If angle A is 45 degrees and angle B is 45 degrees, what is angle C in triangle ABC?

Back

Angle C is 90 degrees.