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Summable Areas

Shenghui Yang, WOLFRAM
Posted 5 years ago
This is an interesting geometry problem posted by Dr. Shan Zun, ex-IMO head coach, PRC

illustration
POSTED BY: Shenghui Yang
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POSTED BY: EDITORIAL BOARD

Interesting problem, I approach the proof from anther prospective from vectors.
POSTED BY: Frederick Wu

Frederick, nice solution! It reminds of ???? formula.
POSTED BY: Shenghui Yang
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