Johnson Solids (Page 1)
(box: x-ray)
(F: faces)
(slider: perspective)
(image: L=rotate R=zoom)
(M: metrics)
Please use a browser that supports "canvas"
(J16)
Elongated Pentagonal Dipyramid
regular faces
Vertices:
12 (10[4] + 2[5])
Faces:
15 (10 equilateral triangles + 5 squares)
Edges:
25
Symmetry:
5-fold Prismatic (D5h)
(values below based on edge length = 1)
Volume:
(5+sqrt(5)+3*sqrt(5*(5
+2*sqrt(5))))/12
≈2.3234830653806160641