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Circle vocab
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Gravity
Terms in this set (19)
Circle
the set of all the points in a plane equidistant from a given point
The interior, the exterior, and the circle itself.
A circle divides the plane into three parts:
360
The sum of the non-overlapping central angles of a circle
Center
the point from which all points of a circle are equidistant
*P
A circle with the center located at P is denoted by
similar
All circles are
Cocentric Circles
circles with the same center
Radius
the distance from the center to a point on a circle; a segment that joins two points on a circle
Congruent circles
circles with the same radius
chord
a segment that joins two points on a circle
diameter
a chord that passes through the center of a circle
twice
A diameter is ____ as long as a radius
diameter
A ________ is the longest chord in a circle.
Diameter formula
D=2r
Circumference
the distance around a circle
Circumference formula
C=2 pi r
Area formula
A=pi r squared
Central angle
an angle with its vertex at the center of a circle
Arc
part of a circle
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