Circles

• Circle: a set of points equidistant to a point called the center
• Central Angle: an angle whose vertex is the center of the circle and whose sides are radii of the circle
• Intercepted Arc: an arc that lies in the interior of an inscribed angle and has endpoints on the angle
• A chord is a segment joining any two points on a circle
• Diameter: a chord passing through the center of a circle, dividing it into two semicircles
• A major arc is greater than a semicircle (greater than 180°)
• Central Angle: an angle whose vertex is the center of the circle and whose sides are radii of the circle
• Intercepted Arc: an arc whose vertex is on the circle and whose sides contain chords of the circle