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Octahedron

platonic
solid

6 vertices

12 edges

8 faces
8 equilateral
triangles (8 tr.)

plain

1 paper strip,
divided
into 2 parts

16 tr.

pattern download,
1 paper strip, divided into 2 parts
1325 x 765 pix, 96 kb, sto.jpg
plaiting scheme: a1↑↓i4, a2↑↑i1, a3↑↓i2, a4↑↑i3; corresponding knot: kn 4-1
modified
Octahedron

(tetragonal
skew
bipyramid)


6 vertices

12 edges

8 faces
8 rechtangular
isoceles
triangles (8 rtr.)

plain


1 paper strip
divided
into 2 parts

16 rtr.


pattern
download,
1 paper strip, divided into 2 parts
2519 x 843 pix, 177 kb, sao.jpg
plaiting scheme: see above.
The quadrangles of the plaiting strip for the octahedron above were replaced by squares ("wrapping").
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