Understanding Trigonometric Angles

What is a right angle?

• An angle that measures 180 degrees.

• An angle that measures 90 degrees.

• An angle that measures 45 degrees.

• An angle that measures 60 degrees.

How many degrees are in a full circle?

• 270

• 180

• 90

• 360

What is the measure of an acute angle?

• Exactly 90 degrees

• More than 180 degrees

• Less than 90 degrees

• Between 90 and 180 degrees

What is the relationship between complementary angles?

• The sum of their measures is 90 degrees.

• The sum of their measures is 180 degrees.

• Their measures can be any positive angle.

• They are always equal in measure.

What is the measure of a straight angle?

• 45 degrees

• 360 degrees

• 90 degrees

• 180 degrees