He leaves the rest of his farm to his four sons on the condition that they partition the estate among themselves so that each one of them gets an equally big and similarly shaped parcel of land. The partitions may be mirror images of each other.
How do the sons partition the estate?
Here's the above picture as text for text browsers and to be used as a base for answering.
Published in Njet Problem! collection 1997-02-21.
