有这么一个故事:北卡大学要在它三个位置近似于正三角形三个顶点位置的校区铺设网络电缆。有一个投标者对北卡大学开出了这样的优惠条件,铺设的三条线路却只收两条线的钱。北卡大学认为这样还不够合理,他们提出在三个校区的中心位置即正三角形的中心位置建立一个中转站,理由是这样的费用可以更省。投标者到北卡大学实地考察后发现三个校区的中心位置是一块 There is a story like this: The University of North Carolina is laying its network cable at a campus that has three vertices that are close to the equilateral triangle. One bidder offered such preferential treatment to the University of North Carolina, laying only three lines in two lines of money. University of North Carolina that this is not reasonable enough, they proposed to establish a transit point in the center of the three campuses that is the center of the triangle, on the grounds that such costs can be more provincial. Bidders to the University of North Carolina field trips found that the center of three campuses is a piece