1 _ 0 rules! fill in the blank with 1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 60, 90, or 120 for a pattern. (divide 360 by the number you put in, and your shape will have that many sides.)
IMPORTANT TIP: Multiply a number by 2.618033989, 1.618... or 0.618..., and round it. (only works well with numbers under 10,000) Put the multiplied number on the left and right, and original number in the middle.
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