Johnson Solids (Page 1)
(box: x-ray)
(F: faces)
(slider: perspective)
(image: L=rotate R=zoom)
(M: metrics)
(J11)
Gyroelongated Pentagonal Pyramid
Vertices:
11 (5[4] + {5 + 1}[5])
Faces:
16 ({5 * 3} equilateral triangles + 1 regular pentagon)
Edges:
25
Symmetry:
5-fold Pyramidal (C5v)
(values below based on edge length = 1)
Volume:
(25+9*sqrt(5))/24
≈1.8801921582290878028