Hans Walser, [20100824a

Puzzle 4

Except the squares, all polygons can be filled
by four kinds of tiles. The tiles have equal area.

Puzzle

Solution 1

Solution 2

Reference

[Deshpande
2009] Deshpande,
M. N. : Proof Without Words: Beyond Extriangles. MATHEMATICS MAGAZINE. Vol. 82,
No. 3, June 2009, p. 208.