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6 Cards in this Set

  • Front
  • Back

Circumference of a Circle

The distance around the edge of a circle.

The distance around the edge of a circle.

Radius of a Circle



Diameter of a Circle

Radius is the distance from the center to the edge. 
 
Diameter starts at one side of the circle, goes through the center and ends on the other side.

Radius is the distance from the center to the edge.



Diameter starts at one side of the circle, goes through the center and ends on the other side.

Radian

A measure of rotation.
 
A complete rotation in radians is measured as 
 
Radians have no "units"

A measure of rotation.



A complete rotation in radians is measured as



Radians have no "units"



Arc Length Formula

The length S of the arc intercepted on a circle of radius r by a central angle of measure (theta) radians is

The length S of the arc intercepted on a circle of radius r by a central angle of measure (theta) radians is

Area of a sector of a circle with radius r and central angle ( in radians) is

You are basically finding the inside measurement of a sector of a circle.The inside measurement of a central angle.

You are basically finding the inside measurement of a sector of a circle.The inside measurement of a central angle.

Unti Circle