Transcript Chapter 10.6 Circles and Arcs

Chapter 10.6 Circles and Arcs
Mini-activity: Identify the parts
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Circle
Center
Radius
Diameter
Central angle
Vocabulary
• Semicircle = half of a circle
Vocabulary
• Minor Arc = smaller than a semicircle
Vocabulary
• Major Arc = greater than a semicircle
Arc Addition Postulate
mQPR mQP mPR
Circumference of a circle
C  2r
C  d
Arc Length
A
B
mAB
Arc length of AB=
 2r
360
Classwork/Homework
• P 570 #9-39 odd