Can you spot the author's mistake?

Liudmyla Hetmanenko @Liudmyla-Hetmanenko

20 September 2023 1 7K Report

In the 'Collection of Geometric Problems' from 1966, there is a problem in which the author made a mistake.

Try to find the author's error!

In the picture, you can see the conditions of this mathematical problem without changes, with an error.

Liudmyla Hetmanenko

Peter Breuer

Dear Peter, thank you for your interest in finding the author's mistake. It was nice to see your geometric vision, answer 6R is indeed incorrect. Let me share with you my proof of why the answer is not correct.

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