Believe it or not - 2

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Dear All

A side of a regular pentagon, of a regular hexagon, and of a regular decagon inscribed in the same circle constitute the sides of the right triangle.

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πŸ…·πŸ…°πŸ…ΏπŸ…ΏπŸ†ˆ πŸ…ΏπŸ…Έ πŸ…³πŸ…°πŸ†ˆ

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