Create perpendicular line segment with fixed length

cjm shared this question 9 months ago

How do I create a line segment of a specific length that is always perpendicular to a given line? I can create perpendicular lines to any line and I can create a segment of fixed length, but I cannot seem to make that segment of fixed length reside along the perpendicular line. Instead, if I use the anchoring tool, it changes the length of the segment and it becomes the wrong length.

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