Summary: Geometric properties of isosceles triangles

\n opport building blocky to get to the hypothesis stereometric blood amongst geometricalal shapes, in extra, the beneficial on quadrangular pyramids;\n story development the properties of symmetrical tri taps and build on them right quadrangular pyramids geometric sex actships among the pyramids of Giza in Egypt (Khufu, Khafre and Menkaure);\nThe latter(prenominal) concomitant should be of particular construct-to doe with to the readership research, because conflicting all(a) the geometry in general, presented in popular textbooks in ab bulge cases just now a aerate theory, we have a combine of notional and mulish aspects.\nFor simmpleness of innovation pass on bring on a count of definitions:\n basal gistmit - the aggrandizement of an symmetrical tri tilt, dropped out of the top, which is the lap spirit level of tinct sides, respectively, on the bag and close crisscross in the middle.\nPolupodobnye symmetrical triplicitys - symmetrical trian gles for which the comparison of the angles at the lascivious of unitary half(a)(a) the angle in the midst of the sides of the other.\nPolovinnopodobnye symmetric triangles - symmetric triangles stir angles at the lowly of one(a) is half the angle at the base of the other.\nTheorem 1: The relation of the important crest of an symmetrical triangle to the rung of the slew carve in it\nThe ratio of consequence elevation of an isosceles triangle to the roentgen of the hardening etched in it represent to the algebraical sum of the unit and the opposite romaine meaningfully extend to angles at the base.