These are compatible to the rhombic penrose tile set.http://www.shapeways.com/model/132549/penrose_tiles___13_skinny_rhombs___part_1_of_2.html?gid=...

You need 21 kites too to have a complete set.

This is a tile that can be used to form both periodic as well as 'aperiodic' tiling patterns. One of the aperiodic patterns formed using this tile ...

One fat and one skinny Penrose-Tile.They have holes inside the grasping knobs, so that they can be put on a thread.If you want a set by those two i...

Doubled to make a closed surface region:kind of looks like a witche's hat from the Wizard of OZ...

Background information:http://en.wikipedia.org/wiki/Penrose_tiles You need the 13 skinny rhombs too (preferably in an other color) to have a compl...

Background information:http://en.wikipedia.org/wiki/Penrose_tiles You need the 21 fat rhombs too (preferably in an other color) to have a complete...