Teaching and learning of mathematics is fun. While teaching my daughter about angles , I used an e tool which is basically a game of start and stop of a stop watch kind of a thing. This tool is available here. Here is a screenshot of estimating 45 degrees. It is much closer to accurate result, so the score is 10 points.
Try this!
![](http://2.bp.blogspot.com/_1K8GG_7TqoM/SUeiMlP231I/AAAAAAAAAqM/z88oDjDcFoI/s320/123.jpg)
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