Classifying Angles

Front

What is an angle that is more than 90° called?

Back

Obtuse angle

Front

What type of angle has a measurement of 90°?

Back

Right angle

Front

What type of angle has a measurement of less than 90°?

Back

Acute angle

Front

What type of angle has a measurement of 180°?

Back

Straight angle

Front

What type of angle has a measurement of more than 180° but less than 360°?

Back

Reflex angle

Front

What is the symbol used to represent an angle?

Back

∠ (angle symbol)

Front

How do you name an angle formed by two lines, XY and YZ?

Back

∠XYZ

Front

What is the sum of angles in a triangle?

Back

180°

Front

What is the term for angles that add up to 90°?

Back

Complementary angles

Front

What is the term for angles that add up to 180°?

Back

Supplementary angles