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Catriona Shearer's Parallelogram Puzzle

作者：John Golden

主題：面積, 平行四邊形, 正方形

Can you figure out the area of the parallelogram using just the area of the triangles? Original tweet: https://twitter.com/Cshearer41/status/1054024681622327296

Catriona's Original

Catriona's Original

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