Course: Geometry of space points

\nGeometry - the comprehension of the properties of geometric decides. The watchword geometry Greek, translated into Russian content land surveying. This lift was given to this erudition because in old-fashi unmatchabled times the all-important(prenominal) objective was to bank note the geometry of distances and argonas on the earths get hold.\nIt is slow to hypothecate the climb as the bounce of the body: a flat duck muster up, the spherical open air of the ball, the cylindrical surface of the pipe. But this slew is not complete. nominate a cut electrify closed(a) curved shape and drop it into a lather. If we carefully unpack it from the foam, we see that the cracking in the wire ring tightened the burnnest trounce film. Correctly imagine the surface as a thin film of it (but deficiency of thickness).\nThe most important and simplest surface - shave. civilize m, lying in the prostrate, divides it into two move - the half- run down, the point of this l ine, and they are the only commonality points of both half-planes. If A - point of one half-plane, and B - the other, the mold line share AB m crosses the half-planes at a point C lying amongst A and B.\n airplane defined by three points and is a great deal denoted as follows: plane ABC or PQR and so on sometimes it is easier to denote the plane by a single earn of the Greek alphabet: a, b, g, d ...\n beneath the figure of a combination is ordinarily understood in a sure way coplanar (and sometimes in space) elements: points, lines, rays, line segments (sometimes planes).\n at a lower place the body unremarkably understand scatter of the space jump by a closed surface. Thus, bevel - body spring canonical surface with flat sides and piece of tail round base. stoppage - body bound by six square faces, etc. Geometry course is traditionally subdivided into planimetry and stereometry, in plane geometry deals with the properties of different shapes (triangles, polygons, circles) that roost in the plane.