Chapter 12-3 Properties of Chords & Arcs

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					       Chapter 12-3
Properties of Chords & Arcs
 Objective:
 • To find the lengths of chords and measures
   of arcs of a circle.
 • To locate the center of a circle using chords.


                 Ms. Chew Geometry 1B               1
Congruent Arcs & Chords



                  Chords are segments with
                  endpoints on a circle.




       Ms. Chew Geometry 1B                  2
• Theorem 12-5
  In the same circle or in congruent circles, (1) congruent central
  angles have congruent arcs; & (2) congruent arcs have congruent
  central angles.

• Theorem 12-6
  In the same circle or in congruent circles, (1) congruent chords have
  congruent arcs; & (2) congruent arcs have congruent chords.


• Theorem 12-7
  A diameter that is perpendicular to a chord bisects the chord and its
  arc.
                          Ms. Chew Geometry 1B                        3
Ms. Chew Geometry 1B   4
Ms. Chew Geometry 1B   5
Ms. Chew Geometry 1B   6
Ms. Chew Geometry 1B   7
   Questions?
     Complete 12-3
in your homework packet




      Ms. Chew Geometry 1B   8

				
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posted:7/12/2013
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Jun Wang Jun Wang Dr
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