Technical Toys, Educational Toys, Action Toys

DITOH Sir Dudeney

Folding model

Product description

The "Sir Dudeney" surface is a folding model that can be turned from an equilateral triangle into a square and vice versa. This world-famous dissection goes back to the English author of entertainment mathematics, Sir Henry Dudeney.

The area equipped with magnets consists of 4 sub-areas that form a closed cycle. The start and end polygons are on the same level. Like most of our products, this product is protected by a patent.

The front is labeled with the small and large multiplication tables and the back with the geometry of the surface. In addition, this folding model can be used to show, among other things, why every triangle has exactly 180 degrees inside angle sum.

Product data

Available since/from:
1 Jan 2020

Recommended retail price:
99 EUR