Use several colors to draw multiple spirals.
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Penrose Polygons with Python TurtlePenrose Polygons with Python Turtle
Generalize Penrose Polygons to be able to draw polygon of any number of sides:
Moss’s EggMoss’s Egg
Like an oval, egg’s oval shape can also be drawn with 4 circle arcs. Moss’s Egg can be drawn with radius 200 half circle (red), and 45 degree arc with