Bend and fold the edges of a triangular parts and make a triangular unit. Make four types of triangular units. For building a dome you need 20 units of each type.
Assemble units A0, A00, B0 and B00 that compose a large rhombic unit. For building a dome you need 20 rhombic units.
3,
ユニット(大)×3を床に並べて合体してゆきます。
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Layout three rhombic units on the floor.
4,
ユニット(大)を3つ組み合わせて、正八面体の一面となるユニット、オクタユニットを4つ作ります。
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Assemble these rhombic units units that compose a lface of spherical octahedron, that we call a octa-unit.
5,
オクタユニットを2つ組み合わせます。
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For building the upper hemisphere of a dome you need four octa-units. Assemble two of them first.
6,
オクタユニットを4つ組み合わせて、ドームの「北半球」を作ります。
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Assemble another two of them to build upper hemisphere that we call North hemisphere.
7,
次に土台を作ります。ユニット(大)×2とBASE0、BASE00を床に並べて合体させます。
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Proceed to constructing lower part, that we all south hemisphere. Prepare and layout the two rhombic units and a Base 0 unit and a Base00 unit on the floor.