Prove that the point (7,10), (-2,5)and (3,-4)are the vertices of an isosceles right triangle

Prove that the point (7,10), (-2,5)and (3,-4)are the vertices of an is

1.	Prove that the point (7,10), (-2,5)and (3,-4)are the vertices of an isosceles right triangle
Answer» You should find the distance between three pairs of vertices AB,BC,CA If two distances are equal and the points are not collinear then points form a isosceles triangle.To prove that it is also right triangle , use the converse of Pythagoras Check that is square of longest sides equal to sum of square of two shorter side.H^2=P^2+B^2