連接中心與各頂點。有2n個全等的三角形。割線分割了兩個。但是平分了它們。其它三角形每邊有n-1個,
連接中心與各頂點。有2n個全等的三角形。割線分割了兩個。但是平分了它們。其它三角形每邊有n-1個,
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