Angle trisection

Angles may be trisected via a Neusis construction, but this uses tools outside the Greek framework of an unmarked straightedge and a compass.

Bisection of arbitrary angles has long been solved.

Rulers. The displayed ones are marked — an ideal straightedge is un-marked

Angle trisection is a classical problem of compass and straightedge constructions of ancient Greek mathematics. It concerns construction of an angle equal to one third of a given arbitrary angle, using only two tools: an unmarked straightedge, and a compass.

单词	Trisecting the Angle
释义	Trisecting the Angle 英语百科 Angle trisection Angle trisection is a classical problem of compass and straightedge constructions of ancient Greek mathematics. It concerns construction of an angle equal to one third of a given arbitrary angle, using only two tools: an unmarked straightedge, and a compass.
随便看	Vipera berus vipera beruss Vipera russelii Vipera russellii Vipera russelli proteinase viperas Vipera ursinii Viper bugloss viperess Viper,European viperfish Viper,Gaboon VIpergic nerve Viperid Viperidae Viperidae venom Viperids viperiform viperin Viperinae viper in ... bosom viperine viperine grass snake viperine grass snakes Viperine Snake

Trisecting the Angle

Angle trisection