Types of Angles

Front

What is an angle that measures exactly 90 degrees?

Back

Right angle

Front

What type of angle measures less than 90 degrees?

Back

Acute angle

Front

What type of angle measures more than 90 degrees but less than 180 degrees?

Back

Obtuse angle

Front

What is the term for an angle that measures exactly 180 degrees?

Back

Straight angle

Front

What do you call an angle that measures more than 180 degrees but less than 360 degrees?

Back

Reflex angle

Front

What is the sum of angles in a triangle?

Back

180 degrees

Front

What type of angle is formed when two lines intersect at a right angle?

Back

Perpendicular angles

Front

What is the term for angles that are opposite each other when two lines cross?

Back

Vertical angles

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