Near-miss Johnson solid

The near-miss Johnson solids meet most of the requirements of being a Johnson solid, but not all of them. Some of them have slightly irregular faces, usually close enough to regular that one can make a physical model with regular faces and not notice a problem. Others may not be strictly convex, meaning they might have coplanar faces or a dihedral angle of 180°.

Unlike the Johnson solids, the near-misses can have higher symmetries that would otherwise be found in the regular and uniform polyhedra, and they can have unusual faces with odd numbers of edges.

One can make distinctions between near-miss Johnson solids with slightly irregular faces, near-miss Johnson solids with coplanar faces, and near-miss Johnson solids that are nonconvex.