  A convex polyhedron, that is, a compact convex subset of $\mathbb{R}^3$ which
is the intersection of finitely many closed half-spaces, can be rectified by
taking the convex hull of the midpoints of the edges of the polyhedron. We
derive expressions for the side lengths and areas of rectifications of regular
polygons in plane, and use these results to compute surface areas and volumes
of various convex polyhedra. We introduce rectification sequences and show that
there are exactly two disjoint pure rectification sequences generated by the
platonic solids.
