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一、立方体的组成问题如图1,立方体是由六个面、八个顶点、十二条棱(边)组成．其中六个面是：上、下两个底面,前、后、左、右四个侧面．我们把它们分成三组：上下,前后,左右．二、立方体的六面问题立方体的六面问题也就是骰子问题,给出一些已知条件,求看不见的那三面的数值．例一个立方体的六个面上分别标有1、2、3、4、5、6六个数字,下图表示的是这个立方体的三种不同的放置方法．如果按这三种放置方法,各下底面上所标
1. The composition of the cube is shown in Figure 1. The cube is composed of six faces, eight vertices, and twelve edges (edges). The six faces are: upper and lower two bottom surfaces, front, rear, left, and right sides. We divide them into three groups: up and down, front and back, and left and right. Second, the six-sided problem of the cube The six-sided problem of the cube is the problem of the dice. Given some known conditions, the three sides of the cube are invisible. Example The six faces of a cube are marked with 1, 2, 3, 4, 5, 6 and six numbers respectively. The figure below shows the three different placement methods for this cube. If you press these three placement methods, the bottom