Classifying Angles and Lines

Front

What is an angle that measures more than 0 degrees but less than 90 degrees?

Back

Acute

Front

What is an angle that measures exactly 90 degrees?

Back

Right

Front

What do we call an angle that measures more than 90 degrees but less than 180 degrees?

Back

Obtuse

Front

What type of lines cross each other and form right angles?

Back

Perpendicular

Front

What is an angle that measures exactly 180 degrees?

Back

Straight

Front

What do we call lines that never meet and are always the same distance apart?

Back

Parallel

Front

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

Back

Complementary Angles

Front

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

Back

Supplementary Angles

Front

What is the name of an angle that measures less than 90 degrees?

Back

Acute

Front

What is the name of an angle that measures more than 180 degrees?

Back

Reflex Angle