Prove that triangle ABC is an isosceles right triangle if its vertices are (r,s)

Prove that triangle ABC is an isosceles right triangle if its vertices are (r,s), (r+1, s+7), (r-3, s+4)
To prove that the triangle is isosceles we will show that the two sides of the triangle are equaland for the right angle part we will use the Pythagoras theorem.Now the given vertices are:A: (r,…

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