This book of very special patterns is fascinating to color and provide and offer almost unlimited scope for the imagination. It is so rich in possibilities that the simple question 'What can you see in the pattern?' can produce as many different answers as there are people or occasions. Firmly based on principles that were first discovered by Arab mathematicians in the tenth century, they have now been thoroughly investigated by John Martineau and accurately drawn by computer. The most beautiful ones have been selected for this book. They are based on the square.