引用第1538樓阿諾於2009-04-26 19:11發表的“”:
仲有樣野我想問
centroid
circumcentre
orthocentre
.......
centroid=3條median o既intersection point
centroid divides medians in the ratio 2:1
circumcentre=3條perpendicular bisector o既intersection point
用呢點做centre可以畫到個穿過三角形三隻角o既圓形
orthocentre=3條altitude o既intersection point
要注意點用番median,perpendicular bisector同altitude o既properties
不過呢o的好似唔多覺佢出咁