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1976 IMO Longlists
23
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1976 IMO Longlists
Problems
(1)
Concentric circles-inscribed triangle-one irrational side
Source:
1/11/2011
Prove that in a Euclidean plane there are infinitely many concentric circles
C
C
C
such that all triangles inscribed in
C
C
C
have at least one irrational side.
geometry unsolved
geometry