1997 IMO Problems/Problem 2

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Problem

The angle at $A$ is the smallest angle of triangle $ABD$. The points $B$ and $C$ divide the circumcircle of the triangle into two arcs. Let $U$ be an interior point of the arc between $B$ and $C$ which does not contain $A$. The perpendicular bisectors of $AB$ and $AC$ meet the line $AU$ and $V$ and $W$, respectively. The lines $BV$ and $CW$ meet at $T$. Show that.

$AU=TB+TC$


Solution

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