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# How to solve the hardest geometry question 16b in New South Wales HSC

The problem we'll take up this time was reported in The Sydney Morning Heraldas the hardest one in the Math Extension 2 exam paper in NSW HSW 2018 test in Australia. It was the question 16b on Geometry involving a large number of pairs of similar triangles.Students not used to identify the key missing element from a host of elements spread all around and think strategically

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