Triangular Pyramid

Triangular Pyramid Facts
Notice these interesting things:
  It has 4 Faces
  · The 3 Side Faces are Triangles
  · The Base is also a Triangle
  It has 4 Vertices (corner points)
  It has 6 Edges
  It is also a Tetrahedron
And for reference:
  Volume = 1/3 × [Base Area] × Height
  Surface Area (when all side faces are the same):
= [Base Area] + 1/2 × Perimeter × [Side Length]
hexahedron Instructions: In "spin" mode it freely spins and will respond to your mouse. In "drag" mode it stops spinning and you can use your mouse to move it.