Hartmut Warm, The golden section in a planar quasi twelve-point star,
Forum Geometricorum, 16 (2016) 95--98.

Abstract. A planar quasi twelve-point star is a configuration formed by selected diagonals of a regular dodecagon forming four equilateral triangles and three squares. We show that segments on the sides of the equilateral triangles are divided in the golden ratio by intersections of certain lines and circles.

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