Answer:
see attached
Explanation:
You want the steps in order for constructing a perpendicular to a line through an external point.
Perpendicular
Essentially, the procedure identifies two points on the line (P and Q) that are equidistant from the external point (R), then proceeds to draw a perpendicular bisector of the segment between those two points. The external point is already equidistant from P and Q, so we only need to find another equidistant point (S) to complete the construction.
See the attachment for the ordering of the instruction steps. (Note the step numbers are not in order on the left.)