Johnson Solids (Page 5)

(box: x-ray)  (F: faces)  (slider: perspective)  (image: L=rotate R=zoom)  (M: metrics)
Please use a browser that supports "canvas"

(J88) Sphenomegacorona
Vertices:  12  ({2 * 2}[4] + {4 + 2 * 2}[5])
Faces:18  ({4 * 3 + 2 * 2} equilateral triangles + 2 squares)
Edges:28
Symmetry:  2-fold Pyramidal  (C2v)
(values below based on edge length = 1)
Volume:sqrt(root[16th-order polynomial])    ≈1.9481082288594728033