Angles of Triangles

Front

What are supplementary angles?

Back

Angles that add up to 180°.

Front

What is the total measure of angles in a triangle?

Back

180 degrees.

Front

What are complementary angles?

Back

Angles that add up to 90°.

Front

What is the measure of angle 1 if it is given as 85 degrees?

Back

85 degrees.

Front

Find the measure of the indicated angle if the options are 145, 113, 102, 78 and the answer is 102.

Back

102 degrees.

Front

In a triangle, what is the sum of the measures of the interior angles?

Back

180 degrees.

Front

If one angle of a triangle is 50 degrees and another is 60 degrees, what is the measure of the third angle?

Back

70 degrees.

Front

What is an acute angle?

Back

An angle that measures less than 90 degrees.

Front

What is an obtuse angle?

Back

An angle that measures more than 90 degrees but less than 180 degrees.

Front

What is a right angle?

Back

An angle that measures exactly 90 degrees.