Penulis: Adam Tetlow

How do you draw Celtic knotwork? What are the secrets of keys? Are there tricks for drawing Celtic spirals? What do these mysterious patterns actually mean? Who drew them? Where did they come from? I …

Have you ever stared at patterned wallpaper and wondered how it was designed? Been captivated by some priceless Celtic art? Or boggled at a beautiful Islamic pattern? Have you ever stepped back and t …

How do you divide a line into three? Or five? Or seven? Is there a simple way to marry harmony and geometry? What is the secret diagram alluded to by writers of antiquity? In this groundbreaking book …