Matematika 8-sinf uchun. Test №1

A)15⁰ B)30⁰ C)25⁰ D)54⁰ E)60⁰

17. a (-1

A)(-1;0) B)(0; )C)(- ;0)D)( - ; ) E)(- ;0)

18. Agar uchburchakning burchaklari 5;6 va 7 sonlariga proporsional bo’lsa , uchburchakning katta burchagini toping .

A)75⁰ B)80⁰ C)50⁰ D)40⁰ E)70⁰

19. uchburchak burchaklarining kattaliklari nisbati 1:1:2 kabi, katta tomonining uzunligi 13 ga teng. uchburchakning katta tomoniga tushirilgan balandlikni toping.

A)6,5 B)12 C)8 D)5 E)10

20. Kichik tomoni ga teng bo’lgan uchburchakning burchaklari 1:2:3 kabi nisbatda bo’lsa , uchburchakning perimetrini toping .

A)8+ B)3(2+ ) C) D)9+

E)6+

21. Uchburakning tomonlari 2;3 va 4 ga teng . 3 ga teng tomon qarshisidagi burchakning sinusini toping .

A) B) C) D) E)

22.Qavariq 12 burchakning diagonallari sonini toping?