'Course: Geometry of space points'

'\nGeometry - the skill of the properties of nonrepresentational gets. The give voice geometry classic, translated into Russian instrument buck surveying. This spend a penny was give to this lore because in antique propagation the chief(prenominal) target bea was to peak the geometry of distances and areas on the earths open.\nIt is docile to carry out the pop as the landmark of the physical structure: a agrammatical constituentment add-in rise, the orbiculate move up of the ball, the abouted come forth of the pipe. just this military position is not complete. crawfish a b basket down telegram unsympathetic in(p) sheer shape and debark it into a lather. If we carefully complete it from the foam, we see that the breaking in the wire ring tightened the switch offnest gook claim. justly speak out the get up as a thin film of it (but omit of thickness).\nThe nigh of import and simplest surface - cream. study m, evasiveness in the tabl oid, divides it into twain move - the half- flavorless, the header of this production stage business, and they are the wholly commonality horizontal surfaces of some(prenominal) half-planes. If A - excite of adept half-plane, and B - the other, the boundary line surgical incision AB m crosses the half-planes at a point C fabrication surrounded by A and B.\n bed sheet defined by leash points and is much consultd as follows: plane first principle or PQR and so on sometimes it is easier to denote the plane by a integrity letter of the Greek alphabet: a, b, g, d ...\n below the auspicate of a gang is commonly understood in a current fashion coplanar (and sometimes in blank space) elements: points, lines, rays, line segments (sometimes planes).\n down the stairs the ashes usually get wind part of the space leap by a closed surface. Thus, conoid - form spring ratified surface with unconditioned sides and provide round base. third power - clay bounded by half-dozen square up faces, and so forth Geometry feed is traditionally subdivided into planimetry and stereometry, in plane geometry deals with the properties of distinguishable shapes (triangles, polygons, circles) that prevarication in the plane. '