Tuesday, 25 November 2014 | Comments
I found this design on a photocopied worksheet from an old textbook, but I don't know which, so cannot credit.
(If you know the source, please let me know)
Here's an animated gif of the steps.
I had students create this using a ruler and set square (drafting triangle).
Or download as a PowerPoint:
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Simon Job — eleventh year of teaching maths in a public high school in Western Sydney, Australia.
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