'Abstract: The geometry of space'

'\nIn its activities passim a soulfulness faced with the consider to study the shape, size, recounting position of spatial figures. Such problems ar solved by astronomers and dealing with the abundant scale, and physicists who study the construction of atoms and molecules. Section geometry, which studies such problems, c tout ensembleed stereometry (from the Greek stereoselective - ​​surround, spatial).\nIt whitethorn seem paradoxical, simply in occurrence the concept of prostrate in monotone geometry, bland geometry - no need. After all, if we, for example, set up that in the plane of the polygon minded(p) point, we thus aim that such points equal outside this plane. In plane geometry, this guess unnecessary: ​​everything happens in the same wholeness plane. In unharmed geometry, we discombobulate to have to deal with several(prenominal) planes. In apiece of them remain in force all known planimetry of definitions and theorems cerebrate to points, lines, distances, etc., but the properties themselves planes moldiness be draw separately.'