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What kinds of shapes pack a flat surface with no gaps? Squares are great for floor tiles, and bees stick hexagons together. With a bit of work, you can get any triangle, no matter how stretched, to fit together without gaps. But what about pentagons? These five-sided shapes are awkward, but some types fit together.

Think your bathroom is boring? Try tons of terrific tessellations and show that tiling is styling! Find out more about the maths of tessellation in this hands-on maths activity.