The condition a1a + b1b + c1c = 0 is for a plane and a line are _____ – McqOptions

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1.	The condition a1a + b1b + c1c = 0 is for a plane and a line are _____ to each other.
A.	integral
B.	parallel
C.	perpendicular
D.	concentric
Answer» C. perpendicular

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