9 3 Arcs And Central Angles Filled Out

How many degrees in a circle? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],0 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1

[object Object],[object Object],9-3 Arcs and Central Angles P A B Central Angle

[object Object],[object Object],[object Object],P A B C Name: AB 9-3 Arcs and Central Angles

[object Object],[object Object],[object Object],P A B C Name: ACB 9-3 Arcs and Central Angles

[object Object],[object Object],P A B 9-3 Arcs and Central Angles

[object Object],[object Object],P A B C mAB = 60º 60º 60º 9-3 Arcs and Central Angles Key Point

[object Object],[object Object],P A B C mACB = 300º 60º 60º 9-3 Arcs and Central Angles

What is the measure of AB? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],A B C 280º 7 √2 0 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1

What is the measure of ACB? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],A B C 280º 7 √2 0 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1

What is the measure of AB? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],A B C 270º 7 √2 0 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1

[object Object],[object Object],P A B C mABC = mAB + m BC 9-3 Arcs and Central Angles

[object Object],[object Object],P A B C AB  BC if and only if 9-3 Arcs and Central Angles

SPICSA P 341 2,4,6,8,10,11,14,16 (Don’t skimp on the proof)

9 3 Arcs And Central Angles Filled Out

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9 3 Arcs And Central Angles Filled Out