equilateral square pyramid | equilateral pentagonal pyramid | regular tetrahedron

1-Johnson solid | 2-Zalgaller polyhedron | 4-pyramid

2-Johnson solid | 3-Zalgaller polyhedron | 5-pyramid

1-uniform dual polyhedron | 1-uniform polyhedron | 1-Zalgaller polyhedron | 3-canonical pyramid | 3-pyramid | 3-simplex | tetrahedron | three-simplex | triangular pyramid

| vertices | edges | faces equilateral square pyramid | 5 | 8 | 5 (4 triangles, 1 quadrilateral) equilateral pentagonal pyramid | 6 | 10 | 6 (5 triangles, 1 pentagon) regular tetrahedron | 4 | 6 | 4 (4 triangles)

1 (8 edges)

1 (10 edges)

1 (6 edges)

| volume equilateral square pyramid | 1/(3 sqrt(2)) equilateral pentagonal pyramid | 1/24 (5 + sqrt(5)) regular tetrahedron | 1/(6 sqrt(2)) | surface area equilateral square pyramid | 1 + sqrt(3) equilateral pentagonal pyramid | 1/2 sqrt(5/2 (10 + sqrt(5) + sqrt(75 + 30 sqrt(5)))) regular tetrahedron | sqrt(3) | circumradius equilateral square pyramid | 1/sqrt(2) equilateral pentagonal pyramid | 1/2 sqrt(1/2 (5 + sqrt(5))) regular tetrahedron | sqrt(3/2)/2 | midradius equilateral square pyramid | 1/2 equilateral pentagonal pyramid | ϕ/2 regular tetrahedron | 1/(2 sqrt(2)) | inradius equilateral square pyramid | 1/(sqrt(2) + sqrt(6)) equilateral pentagonal pyramid | root of 6400 x^8 - 27200 x^6 + 2960 x^4 - 100 x^2 + 1 near x = 0.232788 regular tetrahedron | 1/(2 sqrt(6)) (assuming unit edge lengths)

| regular tetrahedron Schläfli symbol | {3, 3}

| regular tetrahedron Wythoff symbol | 3|2 3

| skeleton graph name equilateral square pyramid | 5-wheel graph equilateral pentagonal pyramid | 6-wheel graph regular tetrahedron | tetrahedral graph

| dual name regular tetrahedron | tetrahedron

| dual skeleton name equilateral square pyramid | 5-wheel graph equilateral pentagonal pyramid | 6-wheel graph regular tetrahedron | tetrahedral graph