Nghệ thuật xếp hình Nhật Bản:tetrahedron
Nghệ thuật xếp hình: tetrahedron
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$ Tetrahedron
Copyright 1998 Stephen Hecht. All Rights Reserved
A dollar bill (66mm x 157mm) produces a model 38mm on a side.
A
B
1. Either side up. 2. Pivoting on A, bring B to 3. Swing behind.
Mountain crease bisector. horizontal crease. Repeat
symmetrically. Propagate 60-
degree valley creases, for a
total of 8 creases.
Trim
corner
D
E
C
o
60
6. Model is now 3-D.
4. Reverse-fold. Wrap around with 120-degree
Rotate 60 degrees. planar valley folds, and tuck E
into pocket on right side of front
5. Triangle C will be the base of face.
the tetrahedron. All valley folds
are 120-degree planar angles.
Tuck D into pocket at bottom edge
of C.
7. Done.
There are 2 pockets you could have tucked E into.
The one in the front face covers the seam, but locks
loosely.
The one in the right face makes a tighter lock, but leaves
the seam visible.
