Question

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On scrap paper, determine if the triangle with the following vertices is a right triangle.

A(-3, 5), B(1, 4), and C(-1, 0).

Tell whether or not the triangle is a right triangle. Explain how you arrived at your answer.

Answer 1

A=(-3,5)
B=(1,4)
so slope of line ab=m1=(y2-y1)/(x2-x1)=4-5/1+3=-1/4
slope of line BC=m2=0-4/-1-1=2
so m1*m2=-1/2 which is not equal to 1
so its not a right triangle