Al-Xorazmiyning tenglamani yechishdagi val-muqobala usulining mohiyati …

A) romb B) ko’pburchak C) parallellogramm

D) uchburchak E) bechburchak deyiladi

72. Parallellogrammning diagonallari - …

A)kesishish nuqtasida teng ikkiga bo’linadi B) ular o’zaro teng

C) kesishish nuqtasida teng uchga bo’linadi D) ular o’zaro parallel

E) ular o’zaro perpendikulyar

73. Ikkita to’g’ri chiziqning kesishishidan hosil bo’lgan burchaklardan biri 75⁰ bo’lsa, qolgan burchaklarni toping

A) 75⁰,105⁰,105⁰ B) 75⁰, 75⁰,105⁰ C) 75⁰, 75⁰, 75⁰ D) 105⁰,105⁰,105⁰ E) 180⁰, 75⁰, 105⁰

74. Teng yonli uchburchakning perimetri 10 ga teng, yon tomoni asosidan 12 marta uzun. Uchbburchakning asosi qanchaga teng?

A) 0,8 B) 0,4 C) 0,5 D) 0,6 E) 0,7

75. Agar uchburchakning A, B va C burchaklari 1:2 va 3 sonlariga proporsional bo’lsa, B burchakni toping

A) 30⁰ B) 90⁰ C) 60⁰ D) 45⁰ E) 120⁰

76. Qo’shni burchaklardan biri ikkinchisidan 16⁰ katta. Shu qo’shni burchaklarni toping

A) 16⁰, 104⁰ B) 80⁰, 96⁰ C) 148⁰, 32⁰ D) 82⁰, 98⁰

E) 62⁰, 118⁰

77. Ikkita to’g’ri chiziqning kesishishidan hosil bo’lgan uchta burchakning yig’indisi 315⁰ ga teng. Shu burchaklardan kicigini toping.

A) 60⁰ B) 45⁰ C) 70⁰ D) 85⁰ E) 50⁰

78. Soatning minut mili 6 minutda necha gradusga buriladi?

A) 20⁰ B) 24⁰ C) 36⁰ D) 40⁰ E) 60⁰