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12-03-2018
Mathematics

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Calling All Mathematicians Please Please Please Help On This Question!!!!!!!!!!!!!!

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12-03-2018

use the distance formula, AB=√[(1-(-9)]²+[(-1-(-3)]=√[100+4]=√104
use the same formula, AC=√52, BC=√52
AC²+BC²=52+52=104=AB²
Yes, it is a right triangle.

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