**Keywords & Theorems**

- Circle
- Center
- Radius
- Chord
- Diameter
- Secant
- Tangent
- Point of Tangency
- Congruent Circles
- Concentric Circles
- Tangent to a Circle Theorem
- Theorem 9-2
- Central Angle
- Arc
- Semicircle
- Minor Arc
- Major Arc
- Congruent Arcs
- Arc Addition Postulate
- Theorem 9-3
- Theorem 9-4
- Theorem 9-5
- Theorem 9-6
- Inscribed Angle
- Intercepted Arc
- Inscribed Angle Theorem
- Theorem 9-8
- Theorem 9-9
- Inscribed Polygon
- Theorem 9-10
- Theorem 9-11
- Theorem 9-12
- Theorem 9-13
- Theorem 9-14
- Theorem 9-15
- Theorem 9-16
- Standard Equation of a Circle

## Vocabulary

Match the description with the correct label.

- minor arc - A.
- chord - B.
- tangent line - C.
- central angle - D.
- secant - E.
- radius - F.
- inscribed angle - G.
- center - H.
- major arc - I.
- point of tangency - J.

## Texas Instruments Resources

*In the CK-12 Texas Instruments Geometry FlexBook® resource, there are graphing calculator activities designed to supplement the objectives for some of the lessons in this chapter. See http://www.ck12.org/flexr/chapter/9694.*

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Aug 07, 2013## Last Modified:

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