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Geometriyadan formulalar

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Y F T ra n sf o A B B Y Y.c bu to re he C lic k he k lic C w. om w w w w rm y ABB PD re to Y 2.0 2.0 bu y rm er Y F T ra n sf o ABB PD er Y GEOMETRIYA PLANIMETRIYA Burchaklar 1800 » 57017 ' 45'' ; 1. O’lchovi: 1 rad = p 2. Turi: O’tkir: 0 < a < 90 0 , 1 = p rad » 0, 017453 rad. 180 To’g’ri: a = 90 0 O’tmas: 90 0 < a < 180 0 Yoyiq: a = 180 0 . 3. Qo'shni burchaklar yig'indisi 1800 teng, ya`ni a + b = 180 0 α va β - qo'shni burchaklar. 4. Vertikal burchaklar teng: α = α. 5. To’g’ri chiziqlarning parallelligi · Mos burchaklar: 2,5; 1,6; 3,7; 4,8; · Ichki almashinuvchi burchaklar: 4,5; 3,6; · Tashqi almashinuvchi burchaklar: 2,8; 1,7; · Ichki bir tomonli burchaklar: 4,6; 3,5; · Tashqi bir tomonli burchaklar: 2,7; 1,8; Ð7 = Ð3 , Ð5 + Ð3 = 180°; Ð2 = Ð5 , Ð1 + Ð4 = 180°. b a a=b a b a + b = 180 0 Uchburchakda asosiy teoremalar 1. Uchburchak ichki burchaklarining yig'indisi: a + b + g = 1800 2. Uchburchakning tashqi va ichki burchaklari orasidagi munosabatlar: a + a1 = 1800 , b + b1 = 180 0 , g + g 1 = 1800 , 71 . w. A B B Y Y.c om Y F T ra n sf o A B B Y Y.c bu to re he C lic k he k lic C w. om a1 = b + g , b1 = a + g , g1 = a + b , a1 + b1 + g 1 = 360 . 0 3. Uchburchak tengsizligi: ì a - b < c, ï í a - c < b, ï b - c < a. î ì a + b > c, ï í a + c > b, ïb + c > a; î 4. Sinuslar teoremasi: a b c = = = 2R . sin a sin b sin g 5. Kosinuslar teoremasi: a2 = b2 + c2 - 2bc × ...
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