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Math puzzle for January 9, 2026

Pythagoras meets Fibonacci at the Lapin Agile snooker emporium. The post Math Puzzle for January 9, 2026 appeared first on ...
BBC

How to prove Pythagoras' theorem

STEP 1 - RIGHT TRIANGLE x 4: Take one piece of card and fold it in half, then fold it in half again... Image caption, ... use the ruler and pencil to draw a straight line across the bottom corner of ...