1. Circles
Definitions

2. Chord
a segment whose endpoints lie on a circle A B AB

3. Arc
an unbroken part of a circle

4. Minor Arc an arc that is less than half of a circle
to name, use 2 points

5. Major Arc an arc that is more than half of a circle
to name, use 3 points

6. Central Angle
an angle whose vertex is at the center of a circle

7. Inscribed Angle
an angle whose vertex is on a circle and whose sides are chords of the circle

8. Tangent
a line, ray, or segment that is in the same plane as the circle, but intersects the circle in only one point

9. Secant
a line, ray, or segment that contains a chord

10. Warm Up #1 Write an example of each of the following: Radius ____
Secant ____
Tangent ____
Chord ____
Diameter ____
Minor arc ____
Major arc ____
Central angle ____
Inscribed angle ____
Center ____