Unit Circle Assessment

Front

What are coterminal angles?

Back

Coterminal angles are angles that share the same terminal side when drawn in standard position. They can be found by adding or subtracting multiples of 360°.

Front

How do you find a positive coterminal angle for a given angle?

Back

To find a positive coterminal angle, add 360° to the given angle until the result is positive.

Front

How do you find a negative coterminal angle for a given angle?

Back

To find a negative coterminal angle, subtract 360° from the given angle until the result is negative.

Front

What is the coterminal angle of 120°?

Back

The positive coterminal angle is 480° and the negative coterminal angle is -240°.

Front

What is the coterminal angle of -180°?

Back

The coterminal angle is 180°.

Front

What is the coterminal angle of 45°?

Back

The coterminal angle is 405°.

Front

In which direction are positive angles measured from standard position?

Back

Positive angles are measured counterclockwise from the positive x-axis.

Front

In which direction are negative angles measured from standard position?

Back

Negative angles are measured clockwise from the positive x-axis.

Front

What is the standard position of an angle?

Back

The standard position of an angle is when its vertex is at the origin and its initial side lies along the positive x-axis.

Front

How do you graph an angle in standard position?

Back

To graph an angle in standard position, start at the positive x-axis, rotate counterclockwise for positive angles and clockwise for negative angles.