Question 773685: For the points A(1,0,1), B(-2,4,3), and C(1,2,-1), find:
The area of the triangle ABC
Answer by Alan3354(69443)   (Show Source):
You can put this solution on YOUR website! For the points A(1,0,1), B(-2,4,3), and C(1,2,-1), find:
The area of the triangle ABC
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Find the side lengths.
Find AC and BC.
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Then either use Heron's Law, or
Find an angle using the Cosine Law.
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