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.x2 + y2 + 4x + 18y + 60 = 0
2.x2 + y2 + 2x + 6y − 54 = 0
3.x2 + y2 + 10x − 2y + 10 = 0
4.x2 + y2 + 10x + 6y + 25 = 0
5.x2 + y2 + 2x − 8y − 47 = 0
6.x2 + y2 + 8x − 6y + 24 = 0
9.x2 + y2 − 12x + 18y + 17 = 0
10.x2 + y2 + 4x − 8y + 16 = 0
11.x2 + y2 + 18x − 16y + 120 = 0
12.x2 + y2 − 12x + 18y + 101 = 0
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