MathDB

B3

Part of 1968 Putnam

Problems(1)

Putnam 1968 B3

Source: Putnam 1968

2/19/2022
Given that a 60∘60^{\circ} angle cannot be trisected with ruler and compass, prove that a 120∘n\frac{120^{\circ}}{n} angle cannot be trisected with ruler and compass for n=1,2,…n=1,2,\ldots
Putnamgeometryconstructions