Playing with Euclid

An excellent interactive tool for students, well, and for technicians who graduated from school - the opportunity to briefly return to childhood.

Remember these tasks "with the help of a compass and a ruler build ..."? Here you can practice in such constructions.
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20 levels are built on the principle "from simple to complex." Previous achievements (for example, the ability to build an equilateral triangle) on the following levels are already available in the form of tools.

Passed everything, though at the last level I had to tinker a bit with tangents to circles.