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Showing posts from April 3, 2022

Moroccan Geometry: S9 Master Class: 10-fold with the Eye of the Sun from Bou Inania Medersa, Fez

  Adv S9 Master Class: 10-fold with the eye of the sun, from Bou Inania Medersa, Fes Part A: Draw the main circle and subdivide it into tenths. This 10-fold design is based on 2 concentric circles. These two fully contain the 4 central shapes. 10 other overlapping circles whose centers are outside of the outer circle complete and contain the remaining shapes. The first of the 2 concentric circles to be drawn is the outer one 1.  We want the finished drawing to fit with 5 mm margins above and below. The ratio of the circle's radius, A, to the distance between the center and the outer point of the pattern, B, is approximately 5 to 7. Using a watercolor paper that is 304mm high, B should be no more than 304mm, minus the 5 mm margins, then divided in half, or 147 mm. So then A, the radius of the main circle, should be about (5/7) x 147 mm, or about 105 mm. Use the usual method of finding the center of the page, draw a circle of the desired radius and quarter the circle with horizo...