Assemble parts so as to complete a geometric surface in Tan gram, a puzzle game to discover on your portal game www.flash-games.net. Geometric pieces are arranged randomly on the screen. Their orientation is random and their placement. At the center of the screen, a white shape. The goal is to fill the shape with the geometric pieces at your disposal. All is played with the mouse. Drag the rectangular and triangular pieces on the surface to fill. To rotate a piece, click on the little round button at the corner parts. From the menu at the bottom of the screen, you can change the level by clicking the Tasks button, change the shape of the surface to be filled by clicking on the arrows move the solution to the puzzle by clicking on Solve or change the texture parts button Skins. An excellent game with 25 puzzles that are very tough call for your vision of space and your math concepts. A real puzzle strongly recommended to all!