12 04 24 Triangle Sum and Exterior Angle Theorem Practice

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°.

Front

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

Back

In an equilateral triangle, each angle measures 60°.

Front

If one angle of a triangle is 90°, what type of triangle is it?

Back

It is a right triangle.

Front

What is the Exterior Angle Theorem?

Back

The Exterior Angle Theorem states that the measure of an exterior angle is equal to the sum of the measures of the two non-adjacent interior angles.

Front

If two angles of a triangle are 50° and 60°, what is the measure of the third angle?

Back

The third angle measures 70° (180° - 50° - 60°).

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

How do you find the measure of an unknown angle in a triangle?

Back

To find an unknown angle, subtract the sum of the known angles from 180°.

Front

What is the measure of an angle that is supplementary to a 130° angle?

Back

The supplementary angle measures 50° (180° - 130°).

Front

What is the measure of an angle that is complementary to a 90° angle?

Back

The complementary angle measures 0° (90° - 90°).

Front

If one angle of a triangle is 66°, what is the sum of the other two angles?

Back

The sum of the other two angles is 114° (180° - 66°).