Vocabulary529

__Vocabulary__

**9.1**
-Circle: The set of all points in a plane that are equidistant from a given point in the plane known as center of circle. -Radius: segment from the center -Chord: segment whose endpoints line on a circle. -Diameter: A chord that contains the center of a circle. -Arc: An unbroken part of a circle. -Endpoints: Two distinct points on a circle divide the circle into two arcs. -Semi-circle: An arc whose endpoints are endpoints of a diameter. -Minor arc: A circle is an arc that is shorter than a semi-circle of that circle. -Major arc: An arc that’s longer than a semi-circle of that circle named by endpoints and another point that lies on the arc. -Central angle: A circle is an angle in the plane of a circle whose vertex is the center of a circle. -Intercepted arc: An arc whose endpoints lie on the sides of the angle and whose other points lie in the interior of the angle. -Degree measure of arcs: The degree measure of a minor arc is the measure of its central angle.

9.2
-Secant: A line that intersects the circle at two points. -Tangent: A line in the plane of the cicle that intersects the circle at exactly one point. -Point of Tangency: Point where tangent intersects the circle.

9.3
-Inscribed angle: is and angle whose vertex lies on a circle and whose vertex lies on a circle and whose sides are chords of the circle.

9.4

 * [None]**

9.5
[None]

9.6

 * [None]**