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Draw line $l$. Take any point $P$ on the line. Using a set square, draw a line perpendicular to line $l$ at the point $P$.
To do: To draw line $l$ and take any point $P$ on the line. By using a set square, draw a line perpendicular to line $l$ at the point $P$.
Solution:
1. Draw a line $l$.
2. Take a point $P$. and using set square we draw an angle of $90^o$.
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