cube | 6 equilateral triangular prism | 1/2 (6 + sqrt(3)) equilateral pentagonal prism | 5 + 1/2 sqrt(5 (5 + 2 sqrt(5))) equilateral hexagonal prism | 3 (2 + sqrt(3)) equilateral heptagonal prism | root of 64 x^6 - 2688 x^5 + 43120 x^4 - 329280 x^3 + 1181292 x^2 - 1479016 x - 487403 near x = 14.2678 equilateral octagonal prism | 4 (3 + sqrt(2)) equilateral nonagonal prism | root of 64 x^6 - 3456 x^5 + 66096 x^4 - 513216 x^3 + 918540 x^2 + 6141096 x - 19309023 near x = 21.3636 equilateral decagonal prism | 5 (2 + sqrt(5 + 2 sqrt(5)))

1 (12 edges)

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