1. 6.7 Circumference & Arc Length
p. 224

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

3. Part to Whole Proportion
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