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OpenStudy (anonymous):
Given 3 points in 3-space, intersected by two lines, only one point intersected by both lines, how do I calculate if the lines are perpendicular or not?
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OpenStudy (unklerhaukus):
the line will be perpendicular (orthogonal) when their dot product equals zero
OpenStudy (anonymous):
awesome, thank you so much!!
OpenStudy (unklerhaukus):
the point that is on the intersection of the lines will be a solution to the equations of both lines simultaneously
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