姓名 ______________________日期 ____________得分 ____ / 12
圆的方程练习
圆的方程 · 1–12
写出方程，或求圆心和半径。
1.(x + 9)2 + (y + 8)2 = 1
2.(x − 6)2 + (y + 4)2 = 49
4.(x + 4)2 + (y + 7)2 = 4
5.(x − 2)2 + (y + 9)2 = 100
6.(x − 9)2 + (y − 4)2 = 9
7.(x + 7)2 + (y − 8)2 = 49
9.(x − 7)2 + (y − 7)2 = 16
10.(x − 6)2 + (y + 7)2 = 36
12.(x − 1)2 + (y − 9)2 = 16
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