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Circumference and Arc Lengths in Circles

Learn about calculating the circumference and arc length of circles using formulas. Practice problems provided for better comprehension. Homework exercises included for reinforcement.

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Circumference and Arc Lengths in Circles

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  1. 6.7 Circumference & Arc Length p. 224

  2. Vocabulary • circumference: __________ around a circle • arc length: portion of the ___________ of a circleEx’s:

  3. Formulas • Circumference C = _____ or C = _____ d =diameter r = radius • Arc Length Corollary: Part to Whole Proportion

  4. Ex. 1 Use the Formula for Circumference

  5. Guided Practice #1-3, p. 224

  6. Ex. 2 Find Arc Lengths

  7. Guided Practice #4-6, p. 225

  8. Ex. 3 Use Arc Lengths to Find Measures

  9. Guided Practice #7-9, p. 225

  10. Homework Pg. 226, 1 – 22 all

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