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NAME______________________ Block_____ GEOMETRY WORKSHEET Section 10.2 – ARCS AND CENTRAL ANGLES Date_______ In each Circle O, the radius is 12. In each find the length of AB (The answer is the length of the segment, not the measure of arc AB.) (Fill in the diagram.) 1. AB = _______ 2. AB = _______ 12 O A B O B A 3. AB = _______ O 60o 12 B A For each of the following, find the measure of 4. m 1 = _______ 1 (O is the center of the circles): 5. m 1 = _______ 85o 130o 280o 1 O 6. m 1 = _______ O 1 (continued on the next page) O 1 Section 10.2 – ARCS AND CENTRAL ANGLES WORKSHEET PAGE 2 Use the circle Q shown below to answers Questions #7-18 7. measure of arc AB = _______ D 8. measure of arc DC = _______ 9. measure of arc BC = _______ E 50o Q 10. measure of arc AED = _______ C 11. measure of arc BD = _______ 40o 12. measure of arc AC = _______ 13. measure of arc BAD = _______ A 14. measure of arc ADC = _______ B 15. measure of arc ACB = _______ 16. measure of arc ABD = _______ 17. measure of arc CED = _______ 18. measure of arc BAC = _______ Identify the following using the diagram shown to the right from the choices in the box. _____19. QC _____20. Arc BDE _____21. _____22. _____23. _____24. AD Arc ABD AQB Point Q _____25. ED _____26. Point C _____27. AB _____28. Arc EA _____27. CG A) Center B) Point of tangency C) Radius D) Chord E) Diameter F) Secant G) Tangent H) Central Angle J) Minor Arc K) Major Arc L) Semicircle D G E Q C A B