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Find out how tessellation is when shapes fit together in a pattern with no gaps or overlaps. Shapes with 4 sides Explore four-sided shapes looking at straight lines, curved lines and 2D shapes.

Squares, triangles, circles - these geometric shapes appear everywhere in art and architecture going back all through human history. Geometric regularity seems to be something that the human brain ...

When most people think of shapes, they imagine a triangle, a rectangle, or maybe even a fancier- sounding rhombus or trapezoid. But to mathematicians, shapes encompass a vast universe of ...