Unit Circle Basics

How many degrees in a full circle?

• 90°
• 180°
• 270°
• 360°

Tags

CCSS.4.MD.C.5

How many radians in a full circle?

• π/2
• π
• 3π/2
• 2π

Standard position is where on the x-y plane?

• The positive x-axis
• The negative x-axis
• The positive y-axis
• The negative y-axis

Angles are measured in which direction from standard position?

• Clockwise
• Counterclockwise

Tags

CCSS.HSF.TF.A.2

The unit circle has a radius length of...

• 0.5
• 1
• π
• 2π

135° is found in which quadrant?

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

Tags

CCSS.HSF.TF.A.4

CCSS.HSF.TF.C.8

200° is found in which quadrant?

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

What is the area of the unit circle?

• 1
• π
• 2π
• π²

What is the area of one quadrant of the unit circle?

• 0.25
• 0.5
• π
• π/4

90° is equal to how many radians?

• π/4
• π/2
• π
• 2π