Hi Charlotte,

Although figures may not be drawn to scale, the relative position of geometric objects are what they appear to be.

So, if a point appears to be to one side of a line, then it is there. Or if a line appears to pass through the center of a circle, then it does.

Since line in the figure appears to pass through opposite vertices of the square, it does and therefore is a diagonal.

Note: If we were not told in Column A that the figure is a square, then we could not assume that it is based on the appearance of the figure -- it could be a rectangle. In this case, however, the diagonal would still be a diagonal.

Nova Press