Angle Review

Front

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

Back

180 degrees.

Front

What are supplementary angles?

Back

Two angles that add up to 180 degrees.

Front

Which of the following sets of angles can form a triangle? 120°, 50°, 20°; 100°, 200°, 60°; 30°, 50°, 80°; 40°, 50°, 90°?

Back

Only 40°, 50°, and 90° can form a triangle.

Front

What is the definition of corresponding angles?

Back

Angles that are in the same position on different parallel lines cut by a transversal.

Front

What is the definition of complementary angles?

Back

Two angles that add up to 90 degrees.

Front

What is the relationship between the angles of a triangle and the exterior angle?

Back

The exterior angle is equal to the sum of the two opposite interior angles.

Front

What is the definition of an acute angle?

Back

An angle that measures less than 90 degrees.

Front

What is the definition of an obtuse angle?

Back

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

Front

What is the definition of a right angle?

Back

An angle that measures exactly 90 degrees.

Front

What are the angle measures of a triangle?

Back

The measures must be positive and less than 180 degrees, and they must sum to 180 degrees.