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Grade 1010 grade science

What is the meaning of `perpendicular to the plane inwards`?Plz help....

Profile image of smriti
9 Years agoGrade 10
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1 Answer

Profile image of Vikas TU
9 Years ago
Perpendicular to the plane inwards means into the plane or inside the plane that could be -i cap or -jcap
or-k cap respectively in terms of direction.