##
Ken's Puzzle of the Week

Square Root of a Line

- Given a compass, a straightedge, and a line segment AB of length 3, draw a
line segment with a length of the square root of 3.
- Given a compass, a straightedge, a line segment AB of length "x", and a
unit line segment YZ, draw a line segment with a length sqrt(x).

Source: Thane Larson, quoting Descartes.

Solution

Mail to Ken