ahmadhasan ahmadhasan

22-05-2017
Mathematics

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A triangle has vertices A(-1,3,4) , B(3,-1,1,) and C(5,1,1). Prove that it is right-angled? And how do you determine the fourth vertex needed to complete a triangle? Please help.

Respuesta :

22-05-2017

By Subtracting Vertces A from B and youll get the answer

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