Curved segment in a circle.
Center of a circle
The point that all points in the circle are equidistant from
Central angle of a circle
An angle whose vertex is the center of the circle
Chord of a circle
A segment whose endpoints are on a circle
The set of points on a plane at a certain distance (radius) from a certain point (center); a polygon with infinite sides
A statement assumed to be true without proof.
A sequence of justified conclusions used to prove the validity of an if-then statement.
Plural form of radius
The segment whose endpoints are any point on a circle or sphere and its center; the length of that segment
An arc whose central angle is a right angle.
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