Side-lights on astronomy and kindred fields of popular science; essays and addresses (1906)
Newcomb, Simon, 1835-1909 · New York Harper · leaf 188
THE FAIRYLAND OF GEOMETRY up and turn it over. In the geometry of flat-landsuch a thing as lifting up is inconceivable; the twotriangles could never be fitted together. Now let us suppose two pyramids similarly related.All the faces and angles of the one correspond to thefaces and angles of the… … FIG. 4 as we please, we could never fit them together. Ifwe fit the bases together the two will lie on oppositesides, one being below the other. But the dweller infour dimensions of space will fit them together with-out any trouble. By the mere turning over of onehe will convert it into the other…
Astronomy
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
