Question 1139910
In the xyz coordinate plane system, how many lines may be drawn perpendicular to a given line at a given point on the line?
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An infinite #.
A plane is perpendicular to a given point in 3-space (normal actually).  A plane contains an infinite # of lines thru a given point.
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In the In the xy coordinate plane system, how many lines may be drawn perpendicular to a given line at a given point on the line?
one (1)