Above left is a Golden Rectangle with a series of rectangles and one square within it. The numbers represent the way the different sections of the Golden Rectangle are formed. They follow the sequence: 0, 1, 1, 2, 3, 5, 8, 13, 21, 34... The next number can always be found by adding up the two numbers before it.

Above right you can see the Golden Rectangle with the Fibonacci spiral added.

Here is Leonardo da Vinci’s The Last Supper. Note how all the key dimensions of the room align with the Golden Ratio – although some of the rectangles used within it finish off-canvas.

