Search Loci: Convergence:
M. is execrable, but
Mr. C. is (x +
In N. Rose, Mathematical Maxims and Minims, Raleigh NC: Rome Press Inc., 1988.
Van Schooten's Ruler Constructions
Solution to Problem V
Problem V: Given an indefinitely long straight line AB and a point C on it, to draw a line CF which is perpendicular to the given straight line.
Construction: Draw, as in the previous problem, any perpendicular DE above AB, and then, from C, by the third, problem, draw a line CF parallel to that. It will be the one sought.
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