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nonahedron 8 vertices 15 edges 9 sides 3 squares 6 isoceles, right triangles (6 tr.) |  triangular prism with 2 pyramidal caps |
mixed plain/vertex 36 tr. |
 pattern download: 2103 x 1217 pix, 333 kB: st4.jpg as pdf-file: st4.pdf |
| plaiting scheme: a2↓↑i5, a7↑↑i3, a5↓↑i8, a8↓↑i2, a4↑↑i9, a9↓↑i7, a1↑↑i6, a6↓↑i4, a3↓↑i1 | |||