1. Bell Ringer

2. 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

3. 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

4. Formulas Circumference Area

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

6. 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:

8. Homework Pg. 456-457  #10-20