Johnson Solids (Page 1)

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(J7) Elongated Triangular Pyramid

Vertices:   7  ({3 + 1}[3] + 3[4]) Faces: 7  ({3 + 1} equilateral triangles + 3 squares) Edges: 12 Symmetry:   3-fold Pyramidal  (C3v) (values below based on edge length = 1) Volume: (sqrt(2)+3*sqrt(3))/12     ≈0.55086383208997724412