Triangle Sum Theorem

Front

What is the Triangle Sum Theorem?

Back

The Triangle Sum Theorem states that the sum of the interior angles of a triangle is always 180 degrees.

Front

If one angle of a triangle measures 60°, what is the sum of the other two angles?

Back

120°

Front

A triangle has angles measuring 30° and 70°. What is the measure of the third angle?

Back

80°

Front

What is the measure of each angle in an equilateral triangle?

Back

Each angle measures 60°.

Front

If two angles of a triangle are 45° and 55°, what is the measure of the third angle?

Back

80°

Front

In a right triangle, what is the measure of the right angle?

Back

90°

Front

If one angle of a triangle is 90° and another is 45°, what is the measure of the third angle?

Back

45°

Front

What is the relationship between the angles in a triangle?

Back

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

Front

If a triangle has angles measuring 40° and 100°, what is the measure of the third angle?

Back

40°

Front

What is the measure of the missing angle if one angle is 50° and another is 60°?

Back

70°