If the square is divided into 4 pieces, this means that the area of the square is divided into 4 equal piece such that the addition of the areas of each triangle gives the area of the square.
As such, to get the area of each triangle, divide the area of the square by 4.
<span>This is the term used to describe economic systems in which the basic economic questions are answered based on a socially, pre-established way.</span>