近两年在高考及各种模拟测试中出现了由平面图形到空间图形的类比试题,颇为引人注目.1正三角形类比正四面体例1若M为正三角形内任一点,则M到三角形各边的距离之和为定值.类比这一命题,那么在空间图形中的类似命题为.分析对所给命题,可以正三角形三边为底,M到各边距离为高,将原 In the past two years in the college entrance examination and various simulation tests, there have been analogy questions from plane graphics to spatial graphics. It is quite noticeable. 1 Regular triangle analogous to regular tetrahedron example 1 If M is any point in the regular triangle, then M to triangle The sum of the distances on each side is a fixed value. Analogous to this proposition, then similar propositions in the spatial graph are: Analysis For the given proposition, you can base the three sides of the regular triangle, the distance from M to the sides is high, and the original