Circle Angles in Radians and Degrees

Find a coterminal angle to 0 degrees.

• 360

• 180

• 90

• 270

Find a coterminal angle to -180 degrees.

• 180

• 90

• 270

• 360

Which of the following is a negative coterminal angle of 165 degrees?

• -165

• 525

• -525

• -555

Which of the following is closest to the measure of the angle shown?

• 30º

• 40º

• 395º

• 440º

How do you convert from degrees to radians?

• Multiply by pi/180*

• Multiply by 180*/pi

• You can't convert from degrees to radians

What is 225  degrees in radians? 

• 7π/4

• 5π/4

• 3π/4

• 5π/3

Convert the following to radians:   
720⁰

• 3π

• 4π

• 5π

Convert the following to degrees:
-8π/5 radians

• -288⁰

• -260⁰

• -275⁰

Find the measure of the angle marked in red.

• -230°

• 130°

• 230°

• 50°

Find a coterminal angle to 5°.

• 365°

• 255°

• -220°

• -365°