Assemble basic geometric solids with their principal sections in just seconds. Seven shapes: cone, cylinder, hemisphere, cube, square pyramid, triangular pyramid, and triangular prism - all mathematically correct.
Edges, diameters, and heights of three-dimensional shapes measure 2-1/2". Also includes three multipurpose bases (square, triangular, circular) and 15 colored plastic sections to form intersecting planes.
The colored sections can be shown on an overhead projector.
40-page instruction manual.