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2020/06/20

How to Draw an Ellipse

As part of an online session on Kepler's 1st & 2nd laws I described how to draw an ellipse using two pins, a pencil, and a loop of string. The participants asked for some instructions that they could use after the session, so here they are:



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The Actual Maths by T. Briggs is licensed under CC BY-NC-SA 4.0 by-nc-sa