如图所示:
以A为圆心,AB长为半径作圆,交y轴于点C1(0,9),C2(0,-1);
以B为圆心,BA长为半径作圆,交y轴于点C3(0,-4);
作AB的垂直平分线,交y轴于点C4(0,0.875),
即这样的点C有四个,分别是C1(0,9),C2(0,-1),C3(0,-4),C4(0,0.875).
超级试练试题库
© 2017-2019 超级试练试题库,All Rights Reserved.