SMRTR Science & EngineeringApr 7, 2026Scientific American

The mathematically correct way to slice a pizza

SMRTR summary

Mathematicians have solved the problem of fairly dividing pizzas with unevenly distributed toppings using the intermediate value theorem. When cutting a circular pizza through its center, rotating the cutting line 180 degrees reverses the proportion of toppings on each side, meaning there must be an angle where both halves contain exactly 50 percent of the toppings. This mathematical principle works even for irregular, handmade pizzas by finding the center of mass and applying the same rotation method.

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