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Name % Date Period10.3 - 10.4 Arcs and Angle Measures

In ©O, OA ± RS. Each problem is independent of the others.

1. lfmRA = 40°, thenmZROA =

2. If mRZS = 250°, then mAS =

3. If RS = 12, then RN = N?

4. If RO = 10 and CM= 6, then RN

5. If mZRON = 45° and RO = 12, then RS =»,!<-£

6. If RS = 24 and ON = 11, then OR =

\'Z.

In OP, AS and J^Mare tangents; TR is a diameter; mTB*= 20°, mlft&=**= 125°. Find the following measures.

'= 35'

= 65°,

0P, mAB = 70°, m>l£ = 80°, mED>= 150°, m^BFH = 55°. Find the following measures.

17. m

18. m

19. mZAGE = 70 '

20. mZDGE = //O'21.

-^L

In 0O, EF is tangent at D, GA bisects ZBGD, mAB = 88° and mDG = 62°. Find thefollowing measures.

22. = 00

23. m GB=

24. mZl =

25. mZ2 =

26. mZ3 = TO

Points A, B, C, D, and E lie on 0O. DK is tangent at D.30°. Find the measure of each numbered angle.

= 80°, mCD*= 70°,

1. mZl =2. mZ2 = .3. mZ3 =4. mZ4 =5. mZ5 =6. mZ6 =7. mZ7 = _8. mZ8 = _9. mZ9 = _10. mZlO =11. mZH =12. mZl2 =13. mZl3 =14. mZl4 =

T6

SO'

4t)'

¥V^~70-

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