Prove that the points `(2,3),(-4,-6)a n d(1,3/2)` do not form a triangle.

Explanation

let `A(2,3),B(-4,-6)` and `C(1,3/2)` be three points


then,

`AB=sqrt((-4-2)^2+(-6-3)^2)`

`AB=sqrt(36+81)`

`AB=sqrt(117)`


Similarly,

...