1. Bell Ringer – Tuesday, May 5, 2015
Write an example of each of the following:
Radius ____
Secant ____
Tangent ____
Chord ____
Diameter ____
Minor arc ____
Major arc ____
Central angle ____
Inscribed angle ____
Center ____

2. Quick Review of Definitions
Circles
Quick Review of Definitions

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

4. Arc
an unbroken part of a circle

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

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

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

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

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

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

11. Arc Length and Area of a Sector
There are two ways to determine Arc Length and Area of a Sector.
1. Realize everything is proportional when it comes to circles.
2. See link to Cool Math
Examples:
p # 14-17, 22, 24, 27