Used for unequal sticks if you can form a quadrilateral such that one of the angles is right angled
In order to make a quadrilateral with the help of unequal sticks with one right angle, we would need to work carefully with the lengths.
Two sticks should be meeting one another to form a right angle just like the right angle in a triangle which follows the pythogoras rule.
Other two sticks should be connected to complete the shape and close the figure.