Is the following statement true for a square$?$

It has all its sides of equal length.

In a square, diagonals bisect each other at right angle.

Diagonals of a square are equal to its sides.

Complete the statement, so as to make the statement true:

A rectangle is a parallelogram in which-----

Complete the statement, so as to make the statement true:

A square is a rhombus in which-----

Complete the statement, so as to make the statement true:

A square is a rectangle in which-----