Question

Prove that the three points are vertices of an isosceles trangle (1,4) ,(4,1) and (8,8)​

Answer 1

Step-by-step explanation:

let (1,4) is x1, y1 and(4,1) is x2, y2 and (8,8) is x3, y3

then by the formula

= x1(y2-y3) +x2(y3-y1) +x3(Y1-y2)