The Elongated Triangular Pyramid
The elongated triangular pyramid is the 7th Johnson solid (J7). It has 7 vertices, 12 edges, and 7 faces (4 equilateral triangles and 3 squares).
Attaching another tetrahedron to the other end of the triangular prism produces the elongated triangular bipyramid (J14).
Here are some views of the elongated triangular pyramid from various angles:
The Cartesian coordinates of the elongated triangular pyramid with edge length 2 are:
- (0, 0, 1 + 4/√6)
- (±1, −1/√3, ±1)
- (0, 2/√3, ±1)