Polydrafter Tetrads

A tetrad is a plane figure made of four congruent shapes, joined so that each shares a boundary with each. Here I show various minimal tetrads for polydrafters.

For similar or scaled tetrads, see Scaled Tetrads for Polydrafters.

The smallest polydrafter tetrad, allowing cells off the polyiamond grid, uses a tetradrafter:

The smallest polydrafter with all cells on the polyiamond grid that forms a tetrad with some cells off the grid is this hexadrafter:

The smallest symmetric polydrafter that forms a tetrad is this extended hexadrafter:

The smallest polydrafters on the polyiamond grid that form tetrads on the grid are these octadrafters:

Last revised 2020-03-17.

Back to Polyform Tetrads < Polyform Curiosities
Col. George Sicherman [ HOME | MAIL ]