Chapter 12 2 chords and arcs
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Chapter 12.2 Chords and Arcs. Theorem 12.4. Within a circle or in congruent circles 1) Congruent central angles have congruent chords 2) Congruent chords have congruent arcs 3) Congruent arcs have congruent central angles. B. D. C. F. O. P. Theorem 12.5.

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Theorem 12 4
Theorem 12.4

  • Within a circle or in congruent circles

    • 1) Congruent central angles have congruent chords

    • 2) Congruent chords have congruent arcs

    • 3) Congruent arcs have congruent central angles

B

D

C

F

O

P


Theorem 12 5
Theorem 12.5

  • Within a circle or in congruent circles

    • 1) Chords equidistant from the center are congruent

    • 2) Congruent chords are equidistant from the center


Theorem 12 6
Theorem 12.6

  • In a circle, a diameter that is perpendicular to a chord bisects the chord and its arcs


Theorem 12 7
Theorem 12.7

  • In a circle, a diameter that bisects a chord (that is not a diameter) is perpendicular to the chord


Theorem 12 8
Theorem 12.8

  • In a circle, the perpendicular bisector of a chord contains the center of the circle


Classwork
Classwork

  • Pgs 673-674 #1-20


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