Question

show that the following points taken in order forms an isosceles triangle .A(6,-4),B(-2,-4),C(2,10)

Answer 1

Using distance formula , first find the distance of three,if two sides are equal then it is isosceles triangle

Answer 2

As isosceles triangle is a triangle having two sides equal.. So calculate distance between AB, BC and AC using distance formula.
$\sqrt{ (x1 - x2) { }^{2} + (y1 - y2) {}^{2} }$

You will get two sides equal.. Thus, the above points are point of isosceles triangle