Fun Tangram Building

The tangram is a traditional dissection puzzle game.
The original tangram is a table game consisting of seven flat polygons usually made by wood. Nowadays, with the technology development, we have more and more choices to embrace the real fun of games.

Just put the triangles to the right place to full fill the whole board. You may find out what it is exactly.

There will be an advanced level in each five levels, which has distracters to make it more difficult. Challenge them with your concentration!