As a former consumer math student, I fail to comprehend how one divides a circle into degrees using only a compass and unmarked ruler. I was hoping someone could answer/direct me to an answer for the following questions:
5. Construct an angle of 15 degrees.
7. Given a line l and a point A outside l, construct a line m passing through A and intersecting l at 30 degrees.
5. First construct an angle of 60º (done in class; same as constructing an equilateral triangle). The subdivide it into two equal angles (done in class); get an angle of 30º. Then subdivide into two again.
7. Construct an angle of 30º as described above. Duplicate it over the given line l; this means that l will be one of the sides of the angle; call the other side m. Then construct a line through A parallel to m (as shown in class).