WARM UP Graph y = -2/3x + 5

Circles Definition: The set of all points in a plane that are equidistant from a given point called the center of a circle V

Chord: A segment whose endpoints are on the circle Radius: A segment whose endpoints are the center and any point on the circle. Chord: A segment whose endpoints are on the circle Diameter: a chord that contains the center of the circle E F D B C A

The diameter is twice the radius or The radius is half the diameter B BC = 12 AB = ? AB = 26 AC = ? C A

Circumference: The distance around a circle. or Circumference = π d B BA = 14 Circumference = ? AC = 3 Circumference = ? C A

Central Angle: An angle whose vertex is the center of the circle Minor Arc: All the points inside the central angle Major Arc: The rest of the points on the circle outside the minor arc Central Angle <ACB A Minor Arc B Major Arc C D