Understanding Angles, Rotations, and Radian Measures

What is the initial side of an angle of rotation?

• The side that bisects the angle

• The side where the angle starts

• The side opposite to the terminal side

• The side where the angle ends

How is a positive angle of rotation measured?

• Counterclockwise from the terminal side

• Clockwise from the initial side

• Counterclockwise from the initial side

• Clockwise from the terminal side

What are coterminal angles?

• Angles that have the same initial side

• Angles that have the same terminal side

• Angles that are equal in measure

• Angles that are supplementary

If an angle measures 310 degrees, what is a positive coterminal angle?

• 620 degrees

• 360 degrees

• 670 degrees

• 720 degrees

What is the radian measure of a full circle?

• π radians

• 4π radians

• 2π radians

• 3π radians

How many radians are in 180 degrees?

• π radians

• π/2 radians

• 2π radians

• 3π/2 radians

What is the pattern in the denominators of radian measures as you move away from the x-axis?

• 3, 4, 6

• 6, 4, 3

• 4, 3, 6

• 3, 6, 4

How do you convert degrees to radians?

• Multiply by 180/π

• Multiply by π/180

• Add π/180

• Subtract 180/π

What is the degree measure of 4π/3 radians?

• 240 degrees

• 180 degrees

• 120 degrees

• 360 degrees

If an angle is -105 degrees, what is its radian measure?

• -7π/12 radians

• -5π/6 radians

• -7π/18 radians

• -3π/4 radians