In the given figure, if the centres of all the circles are joined by horizontal and vertical lines, then determine the number of squares that can be thus formed? 
Select the alternative which represents three out of the five alternative figures which when fitted into each other would form a complete square. 
Select the alternative which represents three out of the five alternative figures which when fitted into each other would form an equilateral triangle. 
Find the number of triangles in the given figure: