Angles and Triangle Sum Honors Geometry Theorem

Front

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

Back

180°

Front

If ∠H and ∠J are complementary, and the measure of ∠H is 35°, what is the measure of ∠J?

Back

55°

Front

Angles that are exactly 90 degrees are called _____ ______.

Back

right angles

Front

What is the measure of angle x if it is given as 20°?

Back

20°

Front

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

Back

75°

Front

What do you call angles that add up to 90 degrees?

Back

Complementary angles

Front

What do you call angles that add up to 180 degrees?

Back

Supplementary angles

Front

In a right triangle, what is the relationship between the angles?

Back

One angle is 90°, and the sum of the other two angles is 90°.

Front

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

Back

60°

Front

If one angle of a triangle measures 30° and another measures 70°, what is the measure of the third angle?

Back

80°