Triangle Sum Theorem

Front

What does the Triangle Sum Theorem state?

Back

The Triangle Sum Theorem states that the sum of all angles in a triangle is 180°.

Front

If one angle of a triangle is 60° and another is 90°, what is the measure of the third angle?

Back

The third angle is 30°.

Front

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

Back

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

Front

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

Back

The third angle is 80°.

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 30° and 60°, what is the measure of the third angle?

Back

The third angle is 90°.

Front

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

Back

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

Front

If one angle of a triangle is 70° and the other is 40°, what is the measure of the third angle?

Back

The third angle is 70°.

Front

What is the formula to find the missing angle in a triangle?

Back

The formula is: Missing angle = 180° - (sum of the other two angles).

Front

In a triangle, if one angle is 100°, what is the maximum possible measure of the other two angles?

Back

The maximum possible measure of the other two angles is 80°.