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Pythagoras:Finding a shorter side

Plain triangles with the working x² = c² − a² set out in boxes that fade away, then triangles on their own and answers to 1 decimal place.

A free GCSE Foundation and Higher geometry and measures lesson on Pythagoras: finding a shorter side, spec code G20. It has a lesson deck to teach from with a visualiser, worksheets with answers, puzzles, an exit ticket, end of unit tests and a method video.

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