1
Q
Circle
A
A closed figure where all points on the line are equidistant from the center of the shape
2
Q
Circumference
A
The distance around a circle
3
Q
Circumference Formula
A
C = 2(3.14)(radius) or C = 3.14(diameter)
4
Q
Area of Circle
A
A = 3.14(radius)(rradius)
5
Q
Diameter (d)
A
Distance across the circle
(edge to edge through center)
6
Q
Radius (r)
A
Distance from center of circle to edge of circle
7
Q
Semicircle
A
Half of a circle
Find the area of the circle, then divide area of circle by 2
8
Q
Quarter Circle
A
One Fourth of the circle
Find the area of the circle, and divide by 4.
7th Grade Math
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