## Systematic solution to hardest geometry question 16b in NSW HSC Math extension 2 exam 2018

The problem we'll take up this time was * reported in The Sydney Morning Herald*as 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 and systematically would find it difficult...