已知一个棱柱共有12个顶点,且所右侧棱长的和为120厘米,则每条侧棱的长为( ).
要详细的讲解和算式和原题的填空
人气:475 ℃ 时间:2020-06-16 15:43:02
解答
棱柱的顶点构成两个形状一样的上表面和下表面
所以各有6个顶点,是6棱柱,
而且棱柱的侧棱相等
每条侧棱 = 120/6 = 20
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