Introduction to Co-Terminal Angles Reference Angles

Standard position is when .....

• the initial side of the angle is on the positive x-axis.
• the initial side of the angle is on the negative x-axis.
• the initial side of the angle is on the positive y-axis.
• the initial side of the angle is on the negative y-axis.

Negative angles are measured in which direction from standard position?

• Clockwise
• Counterclockwise

Positive angles are measured in which direction from standard position?

• Clockwise
• Counterclockwise

In which quadrant is -570⁰

• I

• II

• III

• IV

In which quadrant would you find an angle measuring  -700°?

• 1
• 2
• 3
• 4

-500^o is in which quadrant?

• I
• II
• III
• IV

570° is found in which quadrant?

• Quadrant 1
• Quadrant 2
• Quadrant 3
• Quadrant 4

Find a coterminal angle to 45°.

• 360°

• 405°

• 315°

• 295°

Find a coterminal angle to 5°.

• 365°

• 255°

• -220°

• -365°

In what quadrant is -285°?

• I
• II
• III
• IV