Regular tetrahedron solid figure
A technology of regular tetrahedron and three-dimensional shape, which is applied in the field of geometric body production, can solve the problems of rare regular tetrahedron, and achieve the effect of strong geometric three-dimensional shape, ingenious and simple design, and simple folding of parts
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[0028] The three-dimensional shape of a regular tetrahedron is formed by the combination of six identical parts, Part 1, Part 2...Part 6; the dotted line is used to represent the positive fold line of the front half, that is, when folding, the front and the front of the paper are folded relative to each other; the solid line is added The circle indicates the anti-folding line of the back-folding, that is, when folding, the back side of the paper and the back side are folded relative to each other; the dots on the solid line indicate the indicator line;
[0029] Take a rectangular paper with a ratio of horizontal length, vertical width, length to width 1.1:1, and make two vertical lines, that is, the left and right vertical indicator lines, and the two vertical lines divide the rectangular paper into three small rectangles: left, middle, and right; Two horizontal lines, i.e. the upper and lower horizontal indicator lines, intersect with the two vertical lines, forming three hori...
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