I am going to construct a square. And my question for you and for me is, where do we make this cut in order to minimize the combined areas of this triangle and this square? Well, let's figure out, let's define a variable that we're trying to minimize or that we're trying to optimize with respect to. So let's say that the variable x is the number of meters that we decide to cut from the left. So if we did that, then this length for the triangle would be x meters. And the length for the square would be, well, if we use x up for the left-hand side, we're going to have 100 minus x for the right-hand side. And so what would the dimensions of the triangle and the square be?