Node: Icosahedron Data Members, Next: Icosahedron Constructors and Setting Functions, Previous: Icosahedron, Up: Icosahedron
real dihedral_angle  Protected static const variable 
The angle between the faces of the Icosahedron , namely
138 degrees
11'
= \pi  \arcsin(2/3).

real triangle_radius  Protected variable 
The radius of the circle enclosing a triangular face of
the Icosahedron .
