The question is :-
A figure consist of five equal squares in the form of a cross .show how to divide it by two straight cuts into four equal figures which will fit together to form a square.
Please tell what would be our approach to solve the question ,I am confused what would be our steps to proceed,even i cant guess the first step (please clearly elaborate your steps) . It is a question under the chapter Triangle of an olympiad book so something must be related to triangles definitely.

You are hinted by the fact that if the pieces have equal area, they must have sides $\dfrac{\sqrt5}2$, which evokes the diagonal of $2\times1$ rectangles.