Bell Ringer. Circle Definition Circle : The set of points coplanar points equidistant from a given point. The given point is called the CENTER of the.

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Presentation transcript:

Bell Ringer

Circle Definition Circle : The set of points coplanar points equidistant from a given point. The given point is called the CENTER of the circle. The distance from the center to the circle is called the RADIUS. Center Radius

Definitions Chord : The segment whose endpoints lie on the circle. C h o r d Diameter : A chord that contains the center of the circle. Diameter Secant

Formulas Circumference Area

CIRCUMFERENCE: Circumference is the distance around the circle. Formula:Or Example:Find the circumference of the following circle. 3 cm cm where

Area of a Circle Area of a circle is the number of unit squares that can fit into a circle. Example:Find the area of the following circle. 3 cm Formula:

Homework Pg  #10-20