On: Simple Geometry Puzzles You Can't Solve

[kf]

> Your assumption that the diagonals within the trapezoids are parallel is incorrect.

Do you mean his assumption that the diagonals within the trapezoids are congruent is incorrect? I'd be curious to see your diagram or proof to see where you differ. Obviously, it makes a lot more sense that the diagram is drawn to scale.

[naish → kf]

Here is my solution: http://fernlabs.com/Problem1Solution.png