三角形的三个高共点.The 3 altitudes of a triangle are concurrent.建构一动态绘图:展示星状线共点的三切线.Construct an animation of three concurrent tangents of the astroid.圆上五点,其任四条辛姆森线会共点,可依次找出五点,这五点会共圆.Discover a theorem about the Simson line and f...

“共点”的英语可以翻译为：concurrent ...

“共点”的拼音为：gòng diǎn...