Circle Basic

• Secant
• Diameter
• Radius
• Chord

• Secant
• Diameter
• Tangent
• Chord

How many degrees in a full circle?

• 90°

• 180°

• 270°

• 360°

How many radians in a full circle?

• π/2

• π

• 3π/2

• 2π

What is the arc length of one quadrant of the unit circle?

• 0.25

• π

• π/3

• π/2

The unit circle has a radius length of...

• 0.5

• 1

• π

• 2π

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

270° is equal to how many radians?

• π

• π/3

• 3π/4

• 3π/2

What area is contained in a sector of the unit circle with an angle of π/6?

• π/12

• π/10

• π/6

• 1/6