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几何图形中的排列组合问题,一直是个热点,经久不衰.这类问题不仅考查排列组合方法,同时也考查几何尤其是立体几何的一些知识.求解这类问题主要用列举法、分类法、排除法等.至于类型,请看下面的例析.1“几何要素”个数的计算
Geometry in the combination of the arrangement has been a hot, enduring.This kind of problem not only to test the arrangement and combination methods, but also to examine some knowledge of geometry, especially the three-dimensional geometry.To solve these problems mainly by enumeration, classification, exclusion Act, etc. As for the type, please see the following analysis .1 “geometric elements ” the number of calculations