Johnson Solids (Page 1)

(box: x-ray)  (F: faces)  (slider: perspective)  (image: L=rotate R=zoom)  (M: metrics)

(J4) Square Cupola

Vertices:   12  (8[3] + 4[4]) Faces: 10  (4 equilateral triangles + {4 + 1} squares + 1 regular octagon) Edges: 20 Symmetry:   4-fold Pyramidal  (C4v) (values below based on edge length = 1) Volume: (3+2*sqrt(2))/3     ≈1.9428090415820633659