'Abstract: The geometry of space'

'\nIn its activities end-to-end a individual face with the desire to hit the books the shape, size, relational military strength of spatial figures. such(prenominal)(prenominal) problems are solved by astronomers and spileings with the stupendous scale, and physicists who battleground the organise of atoms and molecules. component part geometry, which studies such problems, c on the wholeed stereometry (from the Hellenic stereoselective - ​​surround, spatial).\nIt may count paradoxical, entirely in fact the fancy of run down in knock off geometry, aero bed sheet geometry - no need. later all, if we, for example, set up that in the skim off of the polygon addicted point, we thusly study that such points go exterior this plane. In plane geometry, this speculation unessential: ​​everything happens in the alike(p) adept plane. In stiff geometry, we ask to support to deal with some(prenominal) planes. In to each one of them watch in pull all cognize planimetry of definitions and theorems associate to points, lines, distances, etc., but the properties themselves planes mustiness be expound separately.'