Angle trisection - Wikipedia

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Trisecting an angle of 30 degrees using method 1

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Trisecting an angle of 150 degrees using method 2

Trisecting an angle of 45 degrees using method 1

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PDF) A UNIQUE METHOD FOR THE TRISECTION OF AN ARBITRARY ANGLE

Geometrical trisection results for angle using the GeoGebra software

Representation of an arbitrary angle in plane geometry 1.2 To show that

How CA I divide an arc of any length into four equal parts? - Quora

Angle trisection - Wikipedia