TETRAPENTOS

 available at Kadon Enterprises

on line : Maths Magiques

Tetrapentos is a puzzle whose pieces are polyforms (more precisely polyiamonds).

The polyiamonds are polyforms obtained by juxtaposition of several triangles as the red triangle below. The blue polyiamonds are a biiamond and a triiamond.

The yellow ones are the 3 tetriamonds and the 4 pentiamonds :

 These 7 yellow polyiamonds are the pieces of Tetrapentos ; they cover area of 32 unit triangles.

Here are shapes to realize with the 7 pieces : 

to Shapes

We can realize these shapes with :

*  the pieces of Pocket Tetrapentos by Kadon Enterprises

* the 7 coloured pieces of Tetrapentos by Kadon Enterprises

* the 7 corresponding pieces of  Mini-Iamond Ring by Kate Jones

If you have the Tetrapentos of Kadon Enterprises, you can also realize shapes, on the tray, with the 7 pieces of Tetrapentos and the 5 little black triangles (Click here to see these shapes)

Of course the shapes which we can realize on the tray are realizable out of the tray without the 5 little triangles (Click here)