Dropping a perpendicular line
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In this exercise you are given a line \(AB\) and a point \(X\) which is not on \(AB\). Your task is to construct a point \(Y\) such that \(XY \perp AB\).
Once you have done the construction you can use the angle tool to measure the angle \(\angle AYX\)and confirm that it is indeed a right angle.
The diagram contains an example of a point \(C\) not on the line \(AB\) and a point \(D\) on \(AB\) such that \(\angle ADC = 90^\circ\).
Hint. This exercise is explained in Euclid Book I, Proposition 12.
