Question
Find the lengths of the sides of the triangle $ PQR $. Is it a right triangle? Is it an isosceles triangle?$ P (3, -2, -3) $ , $ Q (7, 0, 1) $ , $ R (1, 2, 1) $
Step 1
Substituting the coordinates of P and Q into the formula, we get $|PQ|=\sqrt{(7-3)^2+(0-(-2))^2+(1-(-3))^2}=\sqrt{16+4+16}=\sqrt{36}=6$. Show more…
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