8-sinf geometriya 5-nazorat ishi

8-SINF GEOMETRIYA 5-NAZORAT ISHI.

1. 
   To’g’ri to’rtburchakning tomonlari 10 sm va 24 sm. Uning dioganalini toping.
   

A) 26 sm; B) 25 sm; D) 36 sm; E) 16 sm.

2. 
   Uchburchakning uchta tomoniga 29, 25, 6 ko’ra uchburchakning yuzini toping .
   

A) 60; B) 40; D) 48; E) 64.

3. 
   Doiraga ichki chizilgan АВС burchak 80^о ga teng. BC yoyning qiymatini toping, agar
   

AB yoy 100^о ga teng bo’lsa. A) 90^o; B) 120^о; D) 100^о; E)130^о.

4. 
   АС va BD vatarlar O nuqtada kesishadi. СOD burchakni toping, АOD burchak 80^о ga
   

teng bo’lsa. A) 100^о; B) 120^о; D) 140^о; E) 95^о.

5. 
   To’g’ri burchakli uchburchakning katetlari 8 sm va 6 sm. Uchburchakka ichki
   

chizilgan aylanani radiusini toping. A) 3 sm; B) 4 sm; D) 1 sm; E) 2 sm.

6. 
   To’g’ri burchakli uchburchakning kateti 9 sm va gipotenuzasi 15 sm, tashqi chizilgan doiraning radiusini toping. A) 8,5 см; B) 7,5 см; D) 6,5 см; E) 5,5 см.
   

7. 
   Vektor m (- 3; -2), vektor n (2; -1) berilgan. m·n vektorlar ko’paytmasini toping.
   

A) -3; B) 3; D) -4; E) 4.

8. 
   Vektor а(2; 3), vektor b(6; -2). 2а + 3b vektorning koordinatalarini toping..
   

A) (22; 12); B) (22;- 12) D) (22; 0) E) (14; 0).

9. 
   Romb diagonallarining tomonlari bilan hosil qilgan burchaklari kattaliklarining nisbati 2:7 ga teng. Rombning kichik burchagini toping. A) 30⁰ B) 20⁰ D) 50⁰ E) 60⁰.
   

10. 
    Asoslari 28 sm va 12 sm ga teng bo’lgan trapetsiyaning diagonallari o’rtalarini tutashtiruvchi kesmaning uzunligini toping.
    

A) 8 sm B) 10 sm D) 6 sm E) 7 sm.

11. 
    Har qanday burchakning nechta simmetriya o’qi bor?
    

A) 0 B) 1 D) 2 E) cheksiz ko‘p.

12. 
    Har qanday kesma nechta simmetriya o’qiga ega?
    

A) 0 B) 1 D) 2 E) cheksiz ko‘p.

13. 
    To’g’ri burchakli uchburchaksning katetlari 6 va 8 ga teng. Uning gipotenuzasiga tushirilgan balandligini toping. A) 4,8 B) 5 D) 4,5 E) 4,7.
    

14. 
    Qavariq to’rtbuchakning diagonallari uni nechta uchburchakka ajratadi?
    

A) 4 B) 5 D) 6 E) 8.

15. 
    Har bir ichki burchagi 156⁰ bo’lgan qavariq ko’pburchakning nechta tomoni bor?
    

A) 10 B) 15 D) 6 E)12.

16. 
    Rombning balandligi 5 ga, diagonallari ko’paytmasi 80 ga teng. Uning perimetrini toping. A) 32 B) 16 C) 24 D) 28.
    
17. 
    To’g’ri to’rtburchakning tomonlari 8 sm va 15 sm. Uning dioganalini toping..
    

A) 16 sm; B) 17 sm; D) 15 sm; E) 14 sm.

18. 
    Uchburchakning uchalla tomoniga 17, 65, 80 ko’ra uchburchakning yuzini toping .
    

A) 289; B) 288; D) 287; E) 298.

19. 
    Aylanaga ichki chizilgan ABC burchak 50⁰ ga teng. АВ yoyning qiymatini toping, agar BC yoy 120⁰ teng bo’lsa. A) 150^о; B) 140^о; D)130^о; E) 100^о.
    

20. 
    Vektor а(2; 3), vektor b(6; -2). 3а + 2b vektorning koordinatalarini toping..
    

A) (22; 12); B) (18;5) D) (22; 0) E) (14; 0).

21. 
    To’g’ri burchakli uchburchakning katetlari 9 sm va 12 sm. Uchburchakka ichki chizilgan aylanani radiysini toping. A) 3 sm B) 2 sm D) 1sm E) 4 sm.
    

22. 
    To’g’ri burchakli uchburchakning kateti 8 sm va gipotenuzasi 10 sm, tashqi chizilgan aylananing radiusini toping. A)4 sm B) 5 sm D) 6 sm E) 7 sm
    

23. 
    Vektor а(4;-1), vektor b(-2; -5) berilgan. Vektorlar ko’paytmasini toping а·b.
    

A) -3; B) 3; D) 6 ; E) -6.

24. 
    Vektor а(4; -2), vektor b(3, 6). 2а – 3b Vektorlar koordinatasini toping..
    

A) (17; -22) B) (17; 14) D) (-1; 14) E) (-1; -22)

25. 
    To’g’ri burchakli uchburchaksning katetlari 6 va 8 ga teng. Uning gipotenuzasini toping. A) 4,8 B) 5 D) 4,5 E) 4,7.
    

TEST SAVOLLARIGA JAVOBLARNI BOSHQALARDAN KO’CHIRISH FAQAT MENGA YARASHADI.