Analyze the given figures.
The given set of figures consists of five shapes. Our task is to find three figures that, when combined, will form a complete square.
By inspecting the shapes, we observe that:
Figure 1 is a triangular shape.
Figure 3 fits perfectly with Figure 1 to form part of a square.
Figure 4 complements both Figures 1 and 3 to complete the square.
Therefore, the combination of Figures 1, 3, and 4 will form a complete square.