Square with a Compass

  1. Construct a square with only a compass and a straightedge.
  2. Construct a 2 inch square with only a compass and a straightedge, with the compass stuck at a distance of 2 inches.
  3. Mark the four corners of a square using only a compass.
For each problem, try to use a minimum number of steps (lines, marks, etc.)

Source: rec.puzzles, Original, Henry Ernest Dudeny.


Solution
Mail to Ken