Question

How do the points A(1,1,1), B(-2,0,3) and C(-3,-1,1) form the vertices of a right triangle?

Answer 1

You can use Pythagorean Theorem to show that the sum of the squares of two sides equals the square of the final side

Answer 2

is it \[\left| A.B \right|^{2}\]

Answer 3

the distances between each point represent the sides of a right triangle, if the two short legs and the long leg... satisfy the condition for Pythagorean Theorem... then it is a right triangle...

Answer 4

if the dot product of any 2 vectors is equal to 0 ... is another method

Answer 5

do i find the dot product of these?