Classifying Basic Angles

An angle whose measure is between 0 and 90 degrees

• Acute

• Obtuse

• Right

• Tiny

An angle whose measure is between 90 and 180 degrees

• Angry

• Acute

• Obtuse

• Right

An angle whose measure is exactly 180 degrees

• Straight angle

• Right angle

• Acute angle

• Obtuse angle

Two angles whose degree measures add up to 90 degrees (like a corner)

• Silly

• Supplementary

• Complementary

• Obtuse

Complementary angles make what angle measure when they are next to each other?

• Right angle, 90 degrees

• Straight angle, 180 degrees

• Weird angle, 10 degrees

• Unknowable angle, 400 degrees

Supplementary angles make what angle measure when they are next to each other?

• Right angle, 90 degrees

• Straight angle, 180 degrees

• Weird angle, 10 degrees

• Unknowable angle, 400 degrees

Two angles measure 40 degrees and 50 degrees. What are they together?

• Complementary

• Supplementary

• Straight angle

• Nothing

Two angles whose degree measures add up to 180 degrees (like a straight line)

• Suspicious

• Complementary

• Supplementary

• Micromanaged

Two angles measure 120 degrees and 60 degrees. What are they together?

• Complementary

• Supplementary

• Weird

• Origami

Two angles are complementary. One of them has a measure of 70 degrees, what must the other one have?

• 110 degrees

• 90 degrees

• 20 degrees

• 0 degrees