1. D O N OW !

2. A NNOUNCEMENTS ! Turn in your homework! (3 rd & 4 th block only) Quarter 4 Projects due this Friday, 5/11 Starting Unit 7 today! Test next Friday, 5/18 Tutoring Tuesday & Thursday until 3 pm 2 nd Block – Remediation Program Unit 6 Tests & Progress Reports Must be signed by this Friday, 5/11!!

3. U PCOMING S CHEDULE Unit 7 – 2 weeks Unit 8 – 1 week Review for final – 3 days FINALS! SUMMER!!

4. L ESSON 10-6: C IRCLES & A RCS Students will find the measures of central angles and arcs. Students will find the circumference and arc length.

5. Central angle : an angle whose vertex is the center of the circle.

6. T YPES OF A RCS

7. P RACTICE !

8. M EASURES OF A RCS

9. A RCS Adjacent arcs : arcs of the same circle that have exactly one point in common. Arc Addition Postulate : the measure of an arc formed by two smaller arcs is the sum of those two arcs.

10. P RACTICE !

11. C IRCUMFERENCE

12. A RC L ENGTH

13. C IRCUMFERENCE & A RC L ENGTH For each problem, find: The circumference of the circle The measurement of the red arc The length of the red arc Leave all answers in terms of pi!

15. S TEP IT UP ! It is 5:00 p.m. What is the measure of the minor arc formed by the hands of an analog clock?

16. I NDEPENDENT P RACTICE & HOMEWORK ! Workbook page 271 #1-3 (just name 3 for each) #5-15 odd #16-17 #23-25 14 problems total – due tomorrow!

17. H ONORS : I NDEPENDENT P RACTICE & HOMEWORK ! Workbook page 271 #21-22 #23-33 odd #38-40 10 problems total – due tomorrow!