Chapter 15, Concerning a Stranger from Spaceland Summary

A. Square is teaching his grandson mathematics on the last day of the millennium. He explains, by making a square from nine smaller squares, each of three inches, that one can tell the perimeter of a square by squaring the length of a side. He then shows him if he were to take a point that is three inches, move it parallel to itself by three inches, then move it parallel three inches in each direction, he can make a square of nine inches. His grandson, a bright Hexagon, notes that if this is possible, it must be possible to create a Square in such a way, then if the Square could move parallel to itself, it could create a different shape that was three inches each way. Disturbed, A. Square tells him...