Where, in this next figure, are the white bands widest, in the middle or at the ends?

Lay two strips of paper along the sides of a white band, one on each side, so as to cover up the slanting lines. Where now is the band widest?

Here is a square with some lines drawn across it. Are the lines straight? Are they the same distance apart everywhere?

Now I will add certain other lines to the same figure. Are the original lines still straight and the same distance apart everywhere?

Or look at the B’s, H’s, S’s, 3’s, and 8’s on this page, that look about the same size at top and bottom.