Triangula

The Triangula is a geometrically interesting puzzle because it uses pieces normally reserved for a square packing puzzle and puts them in a triangular frame. The goal of the game is to take the 12 pieces that you are given and place 11 of them into the frame provided.
There are also other shapes that can be made with these.

4 cubes using all 12 pieces
4 3d rectangles using all 12 pieces
8 other 3d shapes that can be made using all 12 pieces

Plus other flat shapes can be made using all 12 pieces. Try to find as many as you can.

The solution is hand made by Jean Claude Constantin and shows the solution as well as the different shapes that you can make.

Made in several woods by Jean-Claude Constantin. Jean-Claude Constantin lives in Germany, where he designs and manufactures many different wood and metal puzzles, as well as magic tricks and other intellectual toys and games.