Triangle Angle Sum Theorem

Front

What is the Triangle Angle Sum Theorem?

Back

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

Front

If one angle of a triangle is 34° and another is 101°, what is the measure of the third angle?

Back

The third angle is 45°.

Front

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

Back

Each angle in an equilateral triangle measures 60°.

Front

If a triangle has angles measuring 50° and 70°, what is the measure of the third angle?

Back

The third angle measures 60°.

Front

What is the sum of the angles in a triangle?

Back

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

Front

If x is an angle in a triangle and the other two angles are 40° and 60°, what is the value of x?

Back

x = 80°.

Front

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

Back

The measure of the right angle is 90°.

Front

What is the relationship between the angles in a triangle?

Back

The angles in a triangle are related such that their sum is always 180°.

Front

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

Back

The third angle measures 45°.

Front

What is the measure of an angle that is supplementary to a 70° angle?

Back

The supplementary angle measures 110°.