Angles and Reference Angles

What is the reference angle?

• 38

• 52

• 142

• 398

What is the reference angle?

• 115

• 65

• 25

• 155

What is the reference angle?

• 7

• 63

• 277

• 97

Which is a coterminal angle to the angle shown?

• 831

• 832

• 833

• 834

What is the reference angle for 30 degrees?

• 70 degrees

• 30 degrees

• 150 degrees

• 330 degrees

Match the following angles with their reference angles.

• -310⁰

• 40⁰

• 340⁰

• 20⁰

• -230⁰

• -50⁰

• 320⁰

• 50⁰

What is the reference angle for -30 degrees?

• 150 degrees

• 30 degrees

• 80 degrees

• 60 degrees

Find the reference angle for an angle measuring -300⁰

• 60⁰

• -60⁰

• 30⁰

• 45⁰

What is the reference angle for -310⁰?

• 50⁰

• -50⁰

• 20⁰

• 40⁰

What is the reference angle, in degrees, for an angle of 210°?

Mathematical Equivalence

ON