While scissors congruence accurately captures the modern algebraic notion of 2D area, things get more complicated in higher dimensions. Maxine Calle, CC BY-NDIn math class, you probably learned how to compute the area of lots of different shapes by memorizing algebraic formulas. Remember “base x height” for rectangles and “½ base x height” for triangles? Or “𝜋 x radius²” for circles? But if you were in math class in ancient Greece, you might have learned something very different. Ancient Greek m