THE following discussion gives simple methods of directly trisecting angles which do not exceed 180°. The relations on which the methods are based, hold, however, up to 270°, but it would be difficult ...

This is the season for trisecting angles and other such exercises. This is how you do it: Construct an angle, any angle. Bisect it. At a point, any point, on the line of bisection, draw lines to sides ...