Regular-pentagon three-dimensional shape
A technology of regular pentagons and three-dimensional shapes, which is applied in the field of paper pentagonal three-dimensional shapes, can solve the problems of rare fully enclosed regular pentagonal three-dimensional shapes, and achieve ingenious design, easy combination and insertion, and component production. simple effect
Inactive Publication Date: 2014-12-17
李平
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Problems solved by technology
[0002] At present, the known fully enclosed regular pentagonal solids are mostly composed of planar regular pentagons, and fully enclosed regular pentagonal solids combined with non-planar regular pentagons are rare.
Method used
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[0025] The three-dimensional shape of the regular pentagon is composed of 30 identical parts including part 1, part 2...part 30; the dotted line is used to indicate the positive folding 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 circled Indicates the anti-folding line of reverse folding, that is, when folding, the reverse side of the paper and the reverse side are folded relative to each other; the arrow line indicates the insertion direction, the dotted part of the arrow line indicates the inserted part, and the solid line part of the arrow line indicates the uninserted part;
[0026] Take a rectangular paper with a ratio of length, length, width, length, and width of 1.1:1, and make two fold lines parallel to the width and width of the rectangular paper, one is a horizontal positive fold line, and the other is a horizontal reverse fold line. Equally divided into three horizontal rect...
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The invention discloses a regular-pentagon three-dimensional shape and relates to a making method of a three-dimensional shape. The regular-pentagon three-dimensional shape consists of 30 identical parts; a piece of rectangular paper with ratio 1.1:1 of longitudinal length to transverse width is got, is folded into multilayer transverse rectangles and is made into a part with a left reverse folding line, a right reverse folding line and a middle reverse folding line; an insertion part of a part 1 is inserted into an insertion opening of a part 2, an insertion part of the part 2 is inserted into an insertion opening of a part 3 and an insertion part of the part 3 is inserted into an insertion opening of the part 1, i.e., three parts are connected in an insertion manner to form an angle with three planes; the part 1, the part 2 and other three parts are connected in the such insertion manner, and thus the five parts are connected in the insertion manner to form a pentagon with a pentagonal plane; three pentagons have a common angle, and 30 parts are connected in the insertion manner to form the regular-pentagon three-dimensional shape with 12 pentagons and 20 angles. The regular-pentagon three-dimensional shape has the advantages that the design is ingenious, the parts are simple to make, the combination and insertion are easy to conduct, the shape is unique, the geometric sense is strong and the regular-pentagon three-dimensional shape is attractive and generous.
Description
technical field [0001] The invention relates to a method for making a three-dimensional shape, in particular to a method for making a paper pentagonal three-dimensional shape. Background technique [0002] At present, the known fully enclosed regular pentagonal solids are mostly composed of planar regular pentagons, and fully enclosed regular pentagonal solids combined with non-planar regular pentagons are rare. Contents of the invention [0003] In order to overcome the existing fully-enclosed regular pentagon solids, most of them are composed of planar regular pentagons, and it is rare to have the deficiency of fully-enclosed regular pentagon solids combined with non-planar regular pentagons. The invention provides a method for making a regular pentagonal three-dimensional shape. [0004] The technical solution adopted by the present invention to solve its technical problems is: the regular pentagonal three-dimensional shape is composed of 30 identical parts in total of...
Claims
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IPC IPC(8): B31D5/04
Inventor 李平
Owner 李平