Practice Triangle Sum Theorem Indicated Angle

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

The Triangle Inequality Theorem states the sum of any two sides in a triangle must be greater than the length of the third side.

A triangle has one angle that measure 45° and one that measures 60°. What is the measure of the third angle?

Find the measure of the missing angle.

Use the Triangle Sum Theorem to find the measure of  angle B in degrees.

What should all three angles in a triangle add up to?

The angles in a triangle add up to ______°

Use the Triangle Sum Theorem to find the measure of  angle C in degrees.

Find the measure of the indicated angle.

A triangle's angles add up to...