Two regular pentagons. The centre of the large one is a vertex of the small one. What is yellow : green?
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Solution
Yellow : green is 1 : 1.
Video
Please find here the video solution: Video: Pentagon pleasure.
2 replies on “Pentagon pleasure”
It is a shame that there is no link here to all the interesting approaches which were found to this problem, and now exist only in the Twitter/X feed of replies to the problem there.
You are right. I reinstated them.