Теорема Пифагора

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. 8 . 533. . . . (580 500 . ..). . ; ; ; - PowerPoint PPT Presentation

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<ul><li><p> 8 533</p></li><li><p> (580 500 . ..)</p></li><li><p> ; ; ; , ; , ;</p></li><li><p> , 2 ; , .</p></li><li><p> 4 . 12, 5 . 50 ?</p></li><li><p>c2 = a2 + b2 . , , , . </p></li><li><p>: .</p></li><li><p> , : , .</p></li><li><p> , :2 = 2 + 22 = 82 + 62 2 = 64 + 362 = 100 = 10</p></li><li><p> DCE DE, : DE2 = D2 + CE2DC2 = DE2 CE2DC2 = 52 32DC2 = 25 9DC2 = 16DC = 4</p></li><li><p> KLM KM. , , , KLM . , KLM . KLM : KM2 = KL2 + KM2KM2 = 52 + 122KM = 25 + 144KM = 169KM = 13</p></li><li><p>: , , , 16 9 . , 20 . : , BD , = 20, AD = 16 , DC = 9 . : . 1) BD , , ABD CBD .2) ABD: 2 = AD2 + BD2, BD2 = AB2 AD2,BD2 = 202 162, BD2 = 400 256,BD2 = 144, BD = 12 3) BD: 2 = D2 + D2, BC2 = 122 + 92, BC2 = 144 + 81, BC2 = 225, BC = 15. : = 15 . . BD2 2 = D2 + D2.</p></li><li><p> XII </p><p> . . . . </p><p> , . ,</p><p> , : ?</p></li><li><p> 1 = 10. , 1. , . : ?</p></li><li><p> , 117 . 125 . , .</p></li><li><p> , , , . : E, F, K, L , , EF, NF EF</p></li></ul>