Forms
| name | faces | dual | |
|---|---|---|---|
| elongated triangular bipyramid (J14) | 6 triangles, 3 squares | triangular bifrustum | |
| elongated square bipyramid (J15) | 8 triangles, 4 squares | square bifrustum | |
| elongated pentagonal bipyramid (J16) | 10 triangles, 5 squares | pentagonal bifrustum | |
| elongated hexagonal bipyramid | 12 triangles, 6 squares | hexagonal bifrustum | |
| n-gonal elongated bipyramid | 2n triangles, n squares | bifrustum |
Read more about this topic: Elongated Bipyramid
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of the forms that pass and pass,
of that constant old, old face
that leaps from each wave
to wait underneath the boat
in the hope that at last she’s lost.”
—Hilda Doolittle (1886–1961)