MathDB

4

Part of 1969 IMO Shortlist

Problems(1)

Line passes through fixed point on normal

Source:

9/29/2010
(BEL4)(BEL 4) Let OO be a point on a nondegenerate conic. A right angle with vertex OO intersects the conic at points AA and BB. Prove that the line ABAB passes through a fixed point located on the normal to the conic through the point O.O.
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