Types of Angles

Front

What type of angle is less than 90 degrees?

Back

Acute angle

Front

What type of angle is exactly 90 degrees?

Back

Right angle

Front

What type of angle is greater than 90 degrees but less than 180 degrees?

Back

Obtuse angle

Front

What type of angle is exactly 180 degrees?

Back

Straight angle

Front

What type of angle is formed by two rays that point in opposite directions?

Back

Straight angle

Front

What is the sum of angles in a triangle?

Back

180 degrees

Front

What do you call an angle that measures exactly 0 degrees?

Back

Zero angle

Front

If two angles add up to 90 degrees, what are they called?

Back

Complementary angles

Front

If two angles add up to 180 degrees, what are they called?

Back

Supplementary angles

Front

What type of angle is formed by the hands of a clock at 3:00?

Back

Right angle