Geometriya .VIII-sinf.III-chorak test. C-variant
1. To’g’ri to’rtburchakning yuzi formulasini toping.
#1 S=a.h #2 S=
#3 S=a.b #4
#5 S= a
2
2. Trapetsiyaning asoslari 15 sm va 17 sm.Balandligi 10 sm bo’lsa uning yuzini toping.
#1 55 sm
2
#2 160 sm
2
#3 85 sm
2
#4 210 sm
2
#5 32,5 sm
2
3. Trapetsiya balandligi 5 sm, kichik asosi 6 sm va katta asosidan 2,5 marta kichik bolsa, trapetsiya yuzini toping.
#1 21 sm
2
#2 115sm
2
#3 116 sm
2
#4 52,5 sm
2
#5 82,8 sm
2
4. Asoslari 8 va 2 ga teng bo’lgan teng yonli trapetsiyaning diagonallari o’zaro perpendikulyar.Trapetsiyaning yuzini toping.
#1 100 #2 64 #3 144 #4 25 #5 49
5. Trapetsiyaning yuzi 60 ga ,balandligi 6 ga teng bo’lsa, uning o’rta chizig’I qanchaga teng bo’ladi?
#1 15 #2 5 #3 7,5 #4 10 #5 6
6. “Misr uchburchagi” ni toping.
#1 3,4,5 #2 2,2,2 #3 3,3,3 #4 4,4,4 #5 5,5,5
7.To’g’ri burchakli uchburchakda a=12 , b= 16 bo’lsa , c ni toping
#1 10 #2 5 #3 15 #4 20 #5 25
8. To’g’ru burchakli uchburchakda a = 5 c= 7 bo’lsa , b katetni toping.
#1 0,5 #2 4
#3 2
#4 4
#5
9. Uchburchakning tomonlari a = 12, b=35, c= 37 . Shu uchburchak to’g’ri burchaklimi?
#1 Yo’q #2 Ha #3 Aniqmas #4 Teng yonli #5 TJY
10.Uchta tomoniga ko’ra uchburchak yuzini toping. 29,25,6
#1 288 #2 108 #3 24 #4 60 #5 32
11. Teng tomonli uchburchakning tomoni 5 ga teng, uning yuzini toping.
#1 9
#2 4
#3 25
#4 9
#5 49
12. Teng tomonli uchburchakning tomoni 4 ga teng, uning balandligini toping.
#1 9
#2 8
#3 25
#4 18
#5 49
13.To’g’ri burchakli uchburchakning katetlaridan biri 12 sm,gipotenuzasi esa ikkinchi katetdan 6 sm uzun.Gipotenuzaning
uzunligini toping.
#1 15 #2 25 #3 26 #4 9 #5 32
14. To’g’ri burchakli uchburchakning gipotenuzasi 25 sm,katetlari o’zaro 3:4 nisbatda.Shu uchburchakning kichik katetini katta
katetga nisbatini toping.
#1 0,25 #2 0,75 #3 0,35 #4 5 #50,45
15. Tomonlari 13, 14 va 15 sm bo’lgan uchburchakning eng kichik balandligi necha santimetr?
#1 11,5 #2 11,1 #3 11 #4 11,2 #5 11,6
16. Teng tomonli uchburchakning balandligi 15 sm.Shu uchburchakka ichki chizilgan aylananing radiusini toping.
#1 3 #2 8 #3 6 #4 2,5 #5 5
17. Uchburchak uchlaridan unga ichki chizilgan aylananing urinish nuqtasigacha bo’lgan masofalar mos ravishda 2; 3 va 5 ga
teng.Shu uchburchakning perimetrini toping.
#1 19 #2 18 #3 24 #4 21 #5 20
18. Katetlari 160 va 120 ga teng bo’lgan to’g’ri burchakli uchburchakka ichki chizilgan aylananing radiusini toping.
#1 10 #2 20 #3 30 #4 40 #5 8
19.To'gri burchakli uchburchakning katetlari 4 va 3 ga teng. Kichik katetning gipotenuzadagi proeksiyasini toping.
20. Aylana tashqarisidagi nuqtadan aylanaga ikkita urinma o’tkazilgan.Agar urinmalar orasidagi burchak 72
0
bo’lsa,aylananing
urinish nuqtalari orasidagi katta yoyni toping.
21. Aylana tashqarisidagi nuqtadan aylanaga ikkita urinma o’tkazilgan.Agar urinmalar orasidagi burchak 48
0
bo’lsa,aylananing
urinish nuqtalari orasidagi katta yoyni toping.
22. Aylanani kesuvchi ikki vatari orasidagi burchaklardan biri 100
0
ga teng.Shu burchakka qo’shni bo’lgan burchaklarning
yig’indisini toping.
23. Aylanada undan 90
0
li yoy ajratuvchi ikkita parallel vatar o’tkazilgan. Ulardan birining uzunligi 10 sm.Vatarlar orasidagi
masofani toping.
24. Markazi O bo’lgan aylananing AB yoyi 60
0
ga teng. Agar aylananing radiusi 20 sm ga teng bo’lsa, A nuqtadan OB
radiusgacha bo’lgan masofani toping.
25. O markazli va radiusi 12 sm bo’lgan aylanaga A nuqtadan urinma o’tkazilgan . A va O nuqtalar orasidagi masofa 24 sm ga
teng. AOB burchakni toping.
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