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=__9.1 Chords and Arcs.__=

__**Objectives-**__
 * Define a circle and its associated parts and use them in constuctions.
 * Define and use the degree measure of Arcs.
 * Define and use the length measure of Arcs.
 * Prove a theorem about Chords and their intercepted Arcs.**


 * Vocab-**
 * __Circle-__** A circle is the set of all points in a plane that are Equidistant from a given point in the plane known as the center of the circle.
 * __Radius-__** is a segment from the center of the circle to a point on the circle.
 * __Chord-__** is a segment whose endpoints line on a circle.
 * __Diameter-__** is a chord that contains the center of a circle.

http://www.flickr.com/photos/33732557@N00/363989684/ Example 1

=__9.2 Tangents to Circles.__=


 * __Objectives-__
 * Define Tangents and Secants of circles.
 * Understand the relationship between tangents and certains radii of circle.
 * Understand the geometry of a radius perpendicular to a chord of a circle.

Vocab- __Secant-__** Is a line that intersects the circle at two points. http://www.flickr.com/photos/rumjaku/4653553/ Example 2
 * __Tangent-__** Is a line in the plane of the circle that intersects the circle at only one point.

=__**9.3 Inscribed Angles and Arcs.**__=


 * __Objectives-__
 * Define inscribed angle and intercepted arc.
 * Develop and use the Inscribed Angle Theorem and its corollaries.

Vocab- __Inscribed Angle-__** is an angle whose vertex lies on a circle and whose sides are chords of the circle. http://www.flickr.com/photos/88261881@N00/365455942/ Example 3
 * __Right-Angle Corollary-__** if an inscribed angle intercepts a semicircle, then the angle is a right angle.
 * __Arc-Intercept Corollary-__** If two inscribed angles intercept the same arc, then they have the same measure.

=__9.4 Angles Formed by Secants and Tangents.__=


 * __Objectives-__
 * Define Angles formed by secants and tangents of circles.
 * Develop and use theorems about measures of arcs intercepted by three angles.**


 * Vocab- None

** [|**http://www.flickr.com/photos/natalyesaurus/162876576/**] Example 4

=__9.5 Segments of Tangents, Secants, and Chords.__=


 * __Objectives-__**
 * Define special cases of segments related to circles including secant-secant, secant-tangent, and chord-chord segments.
 * Develop and use theorems about measures of the segments.

Vocab- None**

Example 5 =__9.6 Circles in the Coordinate Plane.__=


 * __Objectives-__
 * Develop and use the equation of a circle.
 * Adjust the equation for a circle to move the center in a coordinate plane.

Vocab- None

http://www.flickr.com/photos/captaindan/165304930/** Example 6

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