Difference between revisions of "1973 IMO Problems/Problem 4"
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Revision as of 13:12, 20 October 2013
A soldier needs to check on the presence of mines in a region having the shape of an equilateral triangle. The radius of action of his detector is equal to half the altitude of the triangle. The soldier leaves from one vertex of the triangle. What path shouid he follow in order to travel the least possible distance and still accomplish his mission?
