Coordinate Tan

Stage: 2 Challenge Level: Challenge Level:2 Challenge Level:2

Here is a grid showing tangram pieces:

This text is usually replaced by the Flash movie.

What are the coordinates of the yellow dots that mark out the tangram? (We've numbered them so you can refer to them easily.)

Try changing the position of the origin by clicking on another place in the grid.

What happens to the coordinates now?


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Published May 2002.