How can you divide an angle into 3 equal angles? You may only use a straightedge and a compass to achieve this.

(This means : You have an angle A, you divide Angle A into 3 Angles B,C,D. And B=C=D=A/3)

Note: vohonam clarified that the problem actually only gives you a straightedge, not a ruler.

(In reply to Solution by Antonio)

Well, the radius grows proportional to the commented lines but not with the angle, for that, the arc of the aperture has to be divided by 3 not the perpendicular line opposite to the angle A

Posted by Antonio on 2003-09-04 06:55:02