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anonymous
 3 years ago
Let A = (−1, 2, 1), B = (−7, 0, 1), C = (−3,−2,−3).
How do you determine if the triangle ABC is right angled? Is it isosceles?
anonymous
 3 years ago
Let A = (−1, 2, 1), B = (−7, 0, 1), C = (−3,−2,−3). How do you determine if the triangle ABC is right angled? Is it isosceles?

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anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0For a triangle be right you must multiply any two vectors. Try multiply A*B. If the product is zero, then the triangle is right.

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0So I first find the dot product of AB and BC?

zzr0ck3r
 3 years ago
Best ResponseYou've already chosen the best response.0also you could find the length of the edges and see if it satifies pathagorean theorem
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