Hardwood Geometric Solids Set of 19 Hardwood Geometric Solids - Set of 19: Smooth, hardwood solid shapes range in size from 5 - 8cm. Includes cube, sphere, hemisphere, ellipsoid, wide cylinder, narrow cylinder, cone, parabola cone, ellipsed cone, square pyramid, triangular pyramid, square prism, tall rectangle prism, short rectangle prism, pentagonal prism, hexagonal prism, octagonal prism, obtuse triangular prism, equilateral triangular prism. Teaching Guide included..