I'm aware that the sum of internal angles of an $n$-sided polygon must be $180^\circ(n-2)$, but that doesn't say anything about the individual angles.
2026-03-28 08:45:51.1774687551
Is a polygon with irrational internal angles possible?
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Certainly. You could have a triangle with angles $10\pi^\circ, 20\pi^\circ, (180-30\pi)^\circ$, for example