# What is the Tangram?

- Author:
- Simona Riva

- Topic:
- Area, Fractions, Geometry, Parallelogram, Right Triangles, Square, Triangles

The Tangram is a Chinese puzzle from the beginning of 1800, made of 7 polygonal pieces (called "

*tans")*, that must be put together to form different shapes. The 7 polygons that form the Tangram are: - 5 right triangles - 1 square - 1 parallelogram The rules of the Tangram puzzle are very simple: - all 7 pieces must be used - no pieces can overlap - pieces can be rotated or flipped## Challenge no.1 - Build the square

Try to build the

*square*using all the Tangram pieces.*Drag*each piece directly, or by dragging the*filled dot*attached to it. Use the*empty dot*attached to each piece to*rotate*it. This puzzle has more than one solution.## Challenge no. 2

Try to form these shapes: