Atriangle has vertices a(-1,3,4) , b(3,-1,1,) and c(5,1,1). prove that it is right-angled?
and how do you determine the fourth vertex needed to complete a triangle?
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his first public project he is asked to create a small scale drawing. the garden is a right triangle with base 25m and height 30m. are you trying to solve for the last side/hypotenuse? the irrational form of the answer would be 5\sqrt{61}