Question

prove that the diagonals of rectangle ABCD with vertices A(2,-1) ,B(5,-1), C(5,6) D (2,6) are equal and bisected each other..

Answer 1

It will take too long to answer.
Draw a diagonal of rectangle ABCD.
Now the diagonal will create 2 triangles- ADC and BAC if AC is the diagonal. Now by using triangle area formula find out the answer