三角形的十二点圆与外接圆的关系

Relations Between Twele-point Circle of a Triangle and Circumcircle

将三角形的九点圆扩充为十二点圆,并在此基础上,建立了它与三角形外接圆的关系,进一步扩充了十二点圆的结论.

On the base of giving out the twelve-point circle, this article establishes the corresponding relations between twelve-point circle and circumcircle of a triangle, thereby strengthened the conclusions of the twelve-point circle.