1. Warm up
A pizza shop sells pizza by the slice. They make two different sizes of pizza – a 14-inch pizza which they cut into 60-degree slices and a 16-inch pizza which they cut into 45-degree slices. They sell a slice of each one for the same price. Which is a better deal? Show your work.

2. Warm up 1. Find the . 172 2. Find the radius.C
172
2. Find the radius.
3. Find the circumference.
4. Find the arc length of B

3. More Working Backwards
1. A sector has an area of 64¶ cm.2 The arc is 90°. Find the measure of the radius. 16
2. A sector has an area of 40.5¶ yd.2 The arc is 45°. Find the measure of the radius. 18

4. Questions over hw?

5. Formulas to KNOW for the Test

6. Singing to Remember Angle Formulas
If you’re happy and you know it

7. Tune: If you’re happy and you know it
If the vertex is ON the circle, half the arc.
If the vertex is IN the circle, half the sum.
If the vertex is OUTSIDE, then you’re in for a ride,
‘Cause it’s half of the difference anyway.

8. Review for TEST

9. Question 1 of 19 Solve for x. A x◦ B
24 C

10. Question 2 of 19
Solve for x.
9x – 7
17x – 2

11. Question 3 of 19 Solve for x.
52 x

12. Question 4 of 19 Solve for x.
76
152 x

13. Question 5 of 19 Solve for x.
110
x – 32
40

14. Question 6 of 19 Solve for x.
38
148 x

15. Question 7 of 19 Solve for x.
86
104 x

16. Question 8 of 19 Find the mAB.C D
7x + 10
3x + 30

17. Question 9 of 19 BE and CF are diameters. Find the mFE.
12  R
63 D
41 F E

18. Question 10 of 19 Solve for x.
4x + 2
98

19. Question 11 of 19 A hamster ran 42 times around its hamster wheel
Question 11 of 19 A hamster ran 42 times around its hamster wheel. The radius of the wheel is 3 inches. What’s the total distance ran by the hamster? Round to the nearest tenth.

20. Question 12 of 19 Solve for x. y  x
82

21. Question 13 of 19 Solve for x. C
164 A
93 S x
22 T

22. Question 14 of 19 Solve for x. A
168 x B

23. Question 15 of 19 Solve for x. x
122

24. Question 16 of 19
120 x
130

25. Question 17 of 19 Find the area of the sector
Question 17 of 19 Find the area of the sector. Round to the nearest tenth.
120
4.5 

26. Question 18 of 19 The circumference of a circle is 24 inches
Question 18 of 19 The circumference of a circle is inches. What is the exact area of the circle?

27. Question 19 of 19 What is the arc length of the shaded region to the nearest tenth?
232 7 

28. Review WS Know your formulas!
Homework
Review WS
Know your formulas!