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Pythagoras:Finding the hypotenuse

One plain triangle with a right angle on every question and a ladder of boxes to fill: square the two short sides, add, then square root. Every answer is a whole number, and the first rows are given until the frame is secure.

A free key stage 3 and GCSE support geometry and measures lesson on Pythagoras: finding the hypotenuse, spec code G20. It has a lesson deck to teach from with a visualiser, a worksheet with answers and an exit ticket.

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