Which of the following properties are used in the construction of a rectangle given the length of a side and a diagonal?
Every angle of a rectangle is a right angle
In the construction of a rectangle given the length of a side and a diagonal, we use the property that every angle of a rectangle is a right angle.
Also note that, in a rectangle, the diagonals just bisect each other (and not necessarily at right angles), and hence is not a property of a rectangle.