The square length is .

Let the vertices of square and .

is origin.

is on - axis at "" units.

is on - axis at "" units.

is in first quadrant.

The end points of the diagonals (non - adjacent pairs) are , and ,.

Find the mid points of diagonals.

Calculate the mid point between two points by using following formula,

.

and

Mid point of

and

Mid point of

Graph

Mid point of each diagonal .

From the graph, the diagonals of a square intersect at their mid points.