7) Line up your ruler across the top of the circle. Draw a line across the top of the circle, from vesica to vesica.
8) Now, line up your ruler across the right hand side of the circle and draw a line across the side of the circle, from vesica to vesica. Extend this line for a little way beyond
the base of the circle.
9) Repeat on the left hand side.
10) Place the point of the compasses at the very tip of the upper, right hand vesica (ringed in blue). Open the compasses to the very tip of the bottom, left hand vesica (i.e., along the diagonal). Swing an arc so that it cuts the vertical line on the right.
11) Repeat on the other side.
12) Line up your ruler across the bottom of the two arcs, where they cut the laft and right hand vertical lines. Draw a line across. This forms the bounding frame for the painting. The sides of the rectangle are in the proportion 1: √2
13) Inside the main circle, line up your ruler across the North and East points. Draw a line to join them. Line up your ruler across the East and South points. Draw a line to join them. Repeat with the other two sets of points, South & West and West and North. You now have a square.
14) Now repeat the process, but joining NE to SE, SE to SW, SW to NW and NW to NE. You now have two squares that form an 8 pointed star.
15) Inside these two squares, repeat the above steps. Join the points where the diagonal, horizontal and vertical lines cut the sides of the two squares.
16) Repeat this process again, inside the two, new squares. Repeat once more. This should give you four sets of nested squares. NEXT