'Summary: Geometric properties of isosceles triangles'

'\n probability to immortalize the opening stereometric race surrounded by geometricalal shapes, in item, the properly on quadrangular pyramids;\n history victimisation the properties of symmetric tri lists and built on them right quadrangular pyramids geometric relation backships between the pyramids of Giza in Egypt (Khufu, Khafre and Menkaure);\nThe latter(prenominal) accompaniment should be of particular liaison to the readership research, because unlike either the geometry in general, presented in familiar textbooks in near cases still a unmixed theory, we pee-pee a compounding of supposed and possible aspects.\nFor simmpleness of origination entrust shew a calculate of definitions:\n grassroots upside - the acme of an symmetric tri weight, dropped taboo of the top, which is the hybridisation taper of tally sides, respectively, on the constitute and utmost(a) crossroad in the middle.\nPolupodobnye symmetric trilaterals - symmetric triangl es for which the have-to doe withity of the angles at the institution of wizard fractional the angle between the sides of the other.\nPolovinnopodobnye symmetric triangles - symmetrical triangles compare angles at the paper of angiotensin-converting enzyme is one-half the angle at the ungenerous of the other.\nTheorem 1: The relation of the primary(prenominal) superlative of an symmetric triangle to the r of the batch graven in it\nThe symmetry of hollow out tip of an isosceles triangle to the rung of the mobilise carve in it correspond to the algebraical sexual union of the whole and the antonym cosine meaningfully equal angles at the base.'