Geometriya. Viii-sinf. I-chorak test. A-variant
Geometriya .VIII-sinf.II-chorak test. B-variant
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Geometriya .VIII-sinf.II-chorak test. B-variant
1. To’g’ri mulohazalarni ko’rsating: 1) Markaziy simmetriyada ikkita mos kesmalar parallel. 2) O’q simmetriyasida ikkita mos nurlar yo’nalishdosh. 3) Biror oltiburchak simmetriya o’qiga ega. #1 1,2 #2 1,3 #3 2,3 #4 1,2,3 #5 1 2. A(-2;3),A 1 nuqta ox o’qiga nisbatan A nuqtaga simmetrik, A 2 esa oy o’qiga nisbatan A 1 nuqtaga simmetrik nuqta.A 2
nuqtaning koordinatalarini toping. #1 (2;-3) #2 (-2;-3) #3 (2;3) #4 (-2;3) #5 (3;-2) 3. Teng yonli uchburchakning nechta simmetriya o’qi bor? #1 0 #2 1 #3 2 #4 cheksiz ko’p #5 mavjud emas 4. Teng yonli uchburchakning uchidan o’tkazilgan balandligi undan perimetri 36 sm ga teng uchburchak kesadi.Agar berilgan teng yonli uchburchakning perimetri 50 sm ga teng bo’lsa balandligining uzunligini hisoblang. #1 12 sm #2 6 sm #3 16 sm #4 11 sm #5 21 sm 5. Teng yonli uchburchak ikki tomonining uzunligi 10 sm va 22 sm bo’lsa , asosi va yon tomonini toping. #1 10,10 #2 6,16 #3 10,22 #4 6,12 #5 22,22 6. L to’g’ri chiziq ABC uchburchakning simmetriya o’qi .Uchburchakning perimetri 46 sm. AO=6,5 sm bo’lsa, shu uchburchakning BC tomonini toping. #1 13 sm #2 16,5 sm #3 17 sm #4 16 sm #5 12 sm 7. (-3; -5) nuqtaga koordinatalar boshiga nisbatan simmetrik nuqtaning koordinatalari nimaga teng? #1 (-3;-5) #2 (3;-5) #3 (0;-5) #4 (3;5) #5 (5;3) 8. (0; 8) nuqtaga koordinatalar boshiga nisbatan simmetrik nuqtaning koordinatalari nimaga teng? #1 (0;8) #2 (8;0) #3 (0;-8) #4 (8;5) #5 (5;5) 9. To’g’ri to’rtburchakning simmetriya o’qlari x= 2 va y=3. Uning uchlaridan biri A(7;5), y=3 to’g’ri chiziqqa nisbatan simmetrik uchining koordinatasini toping. #1 (-3;5) #2 (7;1) #3 (-3;1) #4 (-2;4) #5 (2;2) 10. Simmetriyadan unumli foydalangan ulug’rassomni toping. #1 Ch.Axmarov #2 Ayvazovskiy #3 Leonardo da Vinchi #4 Benkov #5 A.Abdullayev 11. Tomoni 13 sm bo’lgan kvadrat yuzini toping #1 169 sm 2 #2 225 sm 2 #3 900 sm 2 #4 625 sm 2 #5 2 sm 2
12. Tomoni 12 sm bo’lgan kvadrat yuzini toping #1 169 sm 2 #2 225 sm 2 #3 900 sm 2 #4 625 sm 2 #5 144 sm 2
13. Perimetri 60 sm bo’lgan kvadratni yuzni toping. #1 10sm
2 #2 20 sm 2 #3 100 sm 2 #4 225 sm 2 #5 60 sm 2
14. Tomonlari mos ravishda 5 sm vs 6sm bo’lgan to’g’ri to’rtburchakning perimetrini toping. #1 20 sm #2 24 sm #3 30 sm #4 22 sm #5 11 sm 15. 5 m 2
2
#1 50 #2 500 #3 5000 #4 50000 #5 500000 16. To’g’ri to’rtburchakning yuzi 72 sm 2 , bo’yi 9 sm.Perimetrini toping. #1 17sm #2 8 sm #3 26 sm #4 16 sm #5 34sm 17. To’g’ri to’rtburchakning uzunligi 25% ga orttirildi.Uning yuzi o’zgarmasligi uchun enini necha prosentga kamaytirish kerak? #1 20 #2 16 #3 25 #4 18 #5 19,2 18. Kvadrat yuzini 36 marta kamaytirish uchun uning tamonini necha marta kichraytirish kerak? #1 36 marta#2 72 marta#3 6 marta#4 8 marta#5 12 marta 19. Uchburchakning balandligi 25 sm, yuzi 125 sm 2 bo’lsa, uning asosini toping. 20.Togri burchakji uchburchakning b kateti 10 sm va c gipotenuzasi 12 sm bolsa,yuzini toping.
21. Agar to’g’ri to’rtburchakning tomonlari 4 marta orttirilsa, uning yuzi necha marta ortadi? 22.Tomonlari 10sm, 10sm, 12sm ga teng bolgan uchburchakning katta tomoniga tushirilgan balandligini toping.
23.ABC uchburchakda AB=5 sm BC=7sm va AC=10 sm bo’lsa BC tomonga tushirilgan balandlikni toping .
24.ABC uchburchak tomonlari AB=10 sm BC=4 sm va AC=8 sm bo’lsa, AB tomonga tushirilgan balandlikni toping. 25.To'gri burchakli uchburchak kateti 8 sm, uning gipo'tenuzadagi proeksiyasi esa 6,4 sm. Shu uchburchakning yuzini toping.
Geometriya .VIII-sinf.II-chorak test. C-variant
1. B(5;-3), B 1 -oy o’qiga nisbatan B nuqtaga simmetrik nuqta,B 2 esa ox o’qiga nisbatan B 1 nuqtaga simmetrik nuqta.B 2
#1 (5;3) #2 (-5;-3) #3 (-5;3) #4 (5;-3) #5 (2;8) 2. Kvadrat bo’lmagan rombning nechta simmaetriya o’qi bor? #1 0 #2 1 #3 2 #4 cheksiz ko’p #5 mavjud emas 3. Teng yonli uchburchakning uchidan o’tkazilgan balandligi undan perimetri 36 sm ga teng uchburchak kesadi.Agar berilgan teng yonli uchburchakning perimetri 48 sm ga teng bo’lsa balandligining uzunligini hisoblang. #1 12 sm #2 6 sm #3 16 sm #4 11 sm #5 21 sm 4. Teng yonli uchburchakning uchidan o’tkazilgan balandligi undan perimetri 36 sm ga teng uchburchak kesadi.Agar berilgan teng yonli uchburchakning perimetri 30 sm ga teng bo’lsa balandligining uzunligini hisoblang. #1 12 sm #2 6 sm #3 16 sm #4 11 sm #5 21 sm 5. Teng yonli uchburchak ikki tomonining uzunligi 6 sm va 12 sm bo’lsa , asosi va yon tomonini toping. #1 12,14 #2 6,6 #3 10,22 #4 6,12 #5 12,25 6. L to’g’ri chiziq ABC uchburchakning simmetriya o’qi .Uchburchakning perimetri 46 sm. AO=6,5 sm bo’lsa, shu uchburchakning AB tomonini toping. #1 13 sm #2 16,5 sm #3 17 sm #4 16 sm #5 12 sm 7. (4; 7) nuqtaga koordinatalar boshiga nisbatan simmetrik nuqtaning koordinatalari nimaga teng? #1 (-4;7) #2 (-4;-7) #3 (0;-7) #4 (7;4) #5 (-7;-4) 8. Biror O markazga nisbatan simmetriyada o’ziga-o’zi akslanadigan shakl … deyiladi. #1 markaziy simmetrik shakl #2 simmetriya o’qi #3 o’qqa nisbatan simmetrik shakl #4 Hammasi to’g’ri #5 TJY 9. To’g’ri to’rtburchakning simmetriya o’qlari x= 2 va y=3. Uning uchlaridan biri A(7;5), simmetriya markaziga nisbatan simmetrik uchining koordinatasini toping. #1 (-3;5) #2 (7;1) #3 (-3;1) #4 (-2;4) #5 (2;2) 10. Simmetriya so’zining o’zbekchasi nima bo’ladi? #1 o’lchovlilik #2 go’zallik #3 tenglik #4 o’lchovdosh #5 hamma javob to’g’ri 11. Tomoni 15 sm bo’lgan kvadrat yuzini toping #1 169 sm 2 #2 225 sm 2 #3 900 sm 2 #4 625 sm 2 #5 2 sm 2
12. Tomoni 4 dm bo’lgan kvadratni perimetrini toping. #1 24 dm #2 12dm #3 16 dm #4 3dm #5 10dm 13. Perimetri 36sm bo’lgan kvadratni yuzni toping. #1 81 sm
2 #2 36 sm 2 #3 100 sm 2 #4 50 sm 2 #5 60 sm 2
14. Tomonlari mos ravishda 5 sm vs 6sm bo’lgan to’g’ri to’rtburchakning yuzini toping. #1 30 sm 2 #2 15 sm 2 #3 12 sm 2 #4 22 sm 2 #5 11 sm 2
15. 5m 3 = …dm
3
#1 5 #2 50 #3 500 #4 5000 #5 50000 16. To’g’ri to’rtburchakning bo’yi 24 sm,eni bo’yidan 3 marta qisqa.Shu to’rtburchakning yuzini toping. #1 24sm 2 #2 32sm 2 #3 192 sm 2 #4 27 sm 2 # 5 146 sm 2
17. Yuzi 144 sm 2 ,balandliklari 8 sm va 12 sm bo’lgan parallelogrammning perimetrini toping. #1 40 sm #2 30 sm #3 80 sm #4 60 sm #5 120 sm 18. Togri burchakli uchburchakning yuzi 36 ga teng .Agar katetlar nisbati1:2 ga teng bo’lsa,katetlarni toping. #1 12; 6 #2 12;3 #3 8;9 #4 6;6 #5 12;4 19. Uchburchakning balandligi 40 sm, yuzi 400 sm 2 bo’lsa, uning asosini toping. 20.Togri burchakji uchburchakning b kateti 20 sm va c gipotenuzasi 25 sm bolsa,yuzini toping.
21. Tomonlari 5,5,6 bo’lgan uchburchak yon tomoniga tushirilgan balandlikni toping. 22.Tomonlari 10sm, 10sm, 12sm ga teng bolgan uchburchakning kichik tomoniga tushirilgan balandligini toping.
23.ABC uchburchakda AB=5 sm BC=7sm va AC=10 sm bo’lsa AB tomonga tushirilgan balandlikni toping . 24.ABC uchburchak tomonlari AB=10 sm BC=4 sm va AC=8 sm bo’lsa, AC tomonga tushirilgan balandlikni toping.
25.Katetlaridan biri 8 ga teng bo'lgan to'g'ri burchakli uchburchak gipotenuzasining ikkinchi katetga nisbati 5:3 ga teng. Uchburchakning yuzini toping.
Geometriya .VIII-sinf.II chorak testi . D-variant
1. Quyidagi mulohazalardan qaysi biri to’g’ri? 1) To’g’ri to’rtburchakning ikkita simmetriya o’qi bor,ular uning diagonallaridir. 2) To’g’ri to’rtburchakning ikkita simmetriya o’qi bor, bu uning tomonlariga o’tkazilgan o’rta perpendikulyardir. 3) To’g’ri to’rtburchakning to’rtta simmetriya o’qi bor. 4) 1-,2-, 3-mulohazalar notogri. #1 1 #2 2 #3 3 #4 4 #5 1,3
2. Kvadratning nechta simmetriya o’qi bor? #1 1 #2 4 #3 2 #4 3 #5 mavjud emas 3. Teng yonli uchburchakning uchidan o’tkazilgan balandligi undan perimetri 36 sm ga teng uchburchak kesadi.Agar berilgan teng yonli uchburchakning perimetri 60 sm ga teng bo’lsa balandligining uzunligini hisoblang. #1 12 sm #2 6 sm #3 16 sm #4 11 sm #5 21 sm 4. Teng yonli uchburchak ikki tomonining uzunligi 7 sm va 14 sm bo’lsa , asosi va yon tomonini toping. #1 7,14 #2 6,14 #3 7,7 #4 6,12 #5 12,25 5. Teng yonli uchburchak ikki tomonining uzunligi 12 sm va 25 sm bo’lsa , asosi va yon tomonini toping. #1 25,14 #2 6,12 #3 10,22 #4 6,12 #5 12,25
6. L to’g’ri chiziq ABC uchburchakning simmetriya o’qi .Uchburchakning perimetri 56 sm. AO=8 sm bo’lsa, shu uchburchakning AC tomonini toping. #1 13 sm #2 16,5 sm #3 17 sm #4 16 sm #5 12 sm 7. (-3; 5) nuqtaga koordinatalar boshiga nisbatan simmetrik nuqtaning koordinatalari nimaga teng? #1 (-3;-5) #2 (3;-5) #3 (0;-5) #4 (3;-5) #5 (5;3) 8. Teng tomonli uchburchak nechta simmetriya o’qiga ega? #1 1 #2 4 #3 2 #4 3 #5 mavjud emas
9. To’g’ri to’rtburchakning simmetriya o’qlari x= 2 va y=3. Uning uchlaridan biri A(2;4), x=2 to’g’ri chiziqqa nisbatan simmetrik uchining koordinatasini toping. #1 (-3;5) #2 (7;1) #3 (-3;1) #4 (-2;4) #5 (2;2) 10. Agar geometrik shaklni chekli sondagi yassi uchburchaklarga bo’lish mumkin bo’lsa, bu shakl … deyiladi. #1 o’lchovdosh #2 sodda shakl #3 murakkab shakl #4 teng shakl #5 TJY 11. Tomoni 30 sm bo’lgan kvadrat yuzini toping #1 169 sm 2 #2 225 sm 2 #3 900 sm 2 #4 625 sm 2 #5 2 sm 2
12. Perimetri 100sm bo’lgan kvadratni yuzni toping. #1 625sm
2 #2 20 sm 2 #3 100 sm 2 #4 50 sm 2 #5 60 sm 2
13. Perimetri 200 sm bo’lgan kvadratni yuzni toping. #1 10sm
2 #2 20 sm 2 #3 1000 sm 2 #4 2500 sm 2 #5 600 sm 2
14. Bir tomoni 15 sm,perimetri 46 sm bo’lgan to’g’ri to’rtburchakning ikkinchi tomoni qancha bo’ladi? #1 15 sm #2 16 sm #3 8 sm #4 10 sm #5 100sm 15. 245 sm 2 =…m
2
#1 0,245 #2 0,0245 #3 0,00245 #4 0,000245 #5 245 16. 19m
2 -10m
2 10dm
2 =
#1 8 m 2 90dm 2 #2 18 m 2 90dm
2 #3 0, 8 m 2 90dm
2 #4 8 m
2 10dm
2 #5 8 m 2 10dm
2
17. ABCD parallelogrammning AC diagonaliga BO perpendikulyar tushirilgan.AO=8,OC=6 va BO=4 bo’lsa,parallelogrammning yuzini toping. #1 50 #2 28 #3 52 #4 32 #5 56 18. Uchburchakning balandligi 15 sm, yuzi 67,5 sm 2 bo’lsa, uning asosini toping. #1 10sm#2 8 sm#3 uchburchak mavjud e'mas.#4 12 sm#5 9 sm 19. Uchburchakning balandligi 4 sm, yuzi 136 sm 2 bo’lsa, uning asosini toping. 20.Togri burchakji uchburchakning b kateti 24 sm va c gipotenuzasi 25 sm bolsa,yuzini toping.
21. Tomonlari 5,5,6 bo’lgan uchburchak yuzini toping. 22.Tomonlari 10sm, 10sm, 12sm ga teng bolgan uchburchakning yuzini toping.
23.ABC uchburchakda AB=5 sm BC=7sm va AC=10 sm bo’lsa, uchburchakning yuzini toping . 24.ABC uchburchak tomonlari AB=10 sm BC=4 sm va AC=8 sm bo’lsa, BC tomonga tushirilgan balandlikni toping.
25.To'gri burchakli uchburchakning gipotenuzasi 25 ga, katetlaridan biri 10 ga teng. Ikkinchi katetning gipotenuzadagi proeksiyasini toping.
Geometriya .VIII-sinf.III-chorak test.A-variant
1.Trapetsiya yuzi formulasini toping. #1 S=a.h #2 S= #3 S=a.b #4 #5 S= a 2
2. Uchburchak yuzi formulasini toping. #1 S=a.h #2 S= #3 S=a.b #4 #5 S= a 2 3. Trapetsiyaning asoslari 24 sm va 18 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 4. Asoslari 6 va 10 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 30 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. Trapetsiyaning yuzi 30 ga ,balandligi 4 ga teng bo’lsa, uning o’rta chizig’I qanchaga teng bo’ladi? #1 15 #2 5 #3 7,5 #4 10 #5 6 7.To’g’ri burchakli uchburchakda a=3 , b= 4 bo’lsa , c ni toping #1 10 #2 5 #3 15 #4 20 #5 25 8. To’g’ru burchakli uchburchakda a = 1,2 c=1,3 bo’lsa , b katetni toping. #1 0,5 #2 4 #3 2
#4 4 #5
9. To’g’ru burchakli uchburchakda a = 7 c= 10 bo’lsa , b katetni toping. #1 0,5 #2 4 #3 2
#4 4 #5
10.Uchta tomoniga ko’ra uchburchak yuzini toping. 15,15,18 #1 288 #2 108 #3 24 #4 60 #5 32
11. Teng tomonli uchburchakning tomoni 3 ga teng, uning yuzini toping. #1 9 #2 4
#3 25 #4 9
#5 49
12. Teng tomonli uchburchakning tomoni 7 ga teng, uning yuzini toping. #1 9
#2 4 #3 25 #4 9 #5 49
13. Teng tomonli uchburchakning tomoni 6 ga teng, uning balandligini toping. #1 9
#2 8 #3 25
#4 18 #5 49
14. To’g’ri burchakli uchburchakning gipotenuzasi 25 sm,katetlari o’zaro 3:4 nisbatda.Shu uchburchakning kichik katetini toping. #1 10 #2 15 #3 9 #4 12 #5 20 15. To’g’ri burchakli uchburchakning katetlaridan biri 12 sm,ikkinchisi esa gipotenuzadan 8 sm qisqa.Shu uchburchakning ikkinchi katetini toping. #1 15 #2 16 #3 13 #4 5 #5 29 16. Katetlari 3 va 4 ga teng bo’lgan to’g’ri burchakli uchburchakning gipotenuzasiga tushirilgan balandligini toping. #1 2 #2 3 #3 1,4 #4 2,5 #5 2,4 17. Teng tomonli uchburchakning balandligi 7,5 sm.Shu uchburchakka ichki chizilgan aylananing radiusini toping. #1 3 #2 8 #3 6 #4 2,5 #5 5 18. Katetlari 80 va 60 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 uchburchak kateti 8 sm, uning gipo'tenuzadagi proeksiyasi esa 6,4 sm. Shu uchburchakning yuzini toping.
20.To'gri burchakli uchburchakning gipotenuzasi 25 ga, katetlaridan biri 10 ga teng. Ikkinchi katetning gipotenuzadagi proeksiyasini toping.
21. Aylana tashqarisidagi nuqtadan aylanaga ikkita urinma o’tkazilgan.Agar urinmalar orasidagi burchak 56 0 bo’lsa,aylananing urinish nuqtalari orasidagi katta yoyni toping.
22. Aylanani kesuvchi ikki vatari orasidagi burchaklardan biri 135 0 ga teng.Shu burchakka qo’shni bo’lgan burchaklarning yig’indisini toping.
23. A,B,C nuqtalar markazi O nuqtada bo’lgan aylanada yotadi. Agar bo’lsa, AOC burchakni toping.
24. Markazi O bo’lgan aylananing AB yoyi 60 0 ga teng. Agar aylananing radiusi 8 sm ga teng bo’lsa, A nuqtadan OB radiusgacha bo’lgan masofani toping.
25. Tashqi urinuvchi ikki aylana radiuslarining nisbati 4:5 kabi. Aylanalarning markazlari orasidagi masofa 18sm.Kichik aylananing diametrini toping. Geometriya .VIII-sinf.III-chorak test. B-variant
1. Rombning yuzi formulasini toping. #1 S=a.h #2 S= #3 S=a.b #4 #5 S= a 2
#1 55 sm 2 #2 160 sm 2 #3 85 sm 2 #4 210 sm 2 #5 32,5 sm 2 3. Trapetsiyaning asoslari 4 sm va 9 sm.Balandligi 5 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 4. Asoslari 9 va 15 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 30 ga ,balandligi 5 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. Pifagor teoremasi formulasini toping. #1 c
2 = a +b #2 c= a 2 +b
2 #3 c
2 =a 2 +b 2 #4 c 2 = a
2 -b 2 #5 b 2 = c 2 +a 2 7.To’g’ri burchakli uchburchakda a=9 , b= 12 bo’lsa , c ni toping #1 10 #2 5 #3 15 #4 20 #5 25 8. To’g’ru burchakli uchburchakda a = 7 c=9 bo’lsa , b katetni toping. #1 0,5 #2 4 #3 2 #4 4
#5
9. Uchburchakning tomonlari a = 17, b=20, c= 45 . 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. 4,13,15 #1 288 #2 108 #3 24 #4 60 #5 32
11. Teng tomonli uchburchakning tomoni 4 ga teng, uning yuzini toping. #1 9 #2 4 #3 25 #4 9 #5 49 12. Teng tomonli uchburchakning tomoni 3 ga teng, uning balandligini toping. #1 9 #2 8 #3 25 #4 18 #5 49 13. Teng tomonli uchburchakning tomoni 7 ga teng, uning balandligini toping. #1 9 #2 8 #3 25 #4 18 #5 49 14. To’g’ri burchakli uchburchakning gipotenuzasi 25 sm,katetlari o’zaro 3:4 nisbatda.Shu uchburchakning katta katetini toping. #1 10 #2 15 #3 9 #4 12 #5 20 15. To’g’ri burchakli uchburchakning katetlaridan biri 12 sm,ikkinchisi esa gipotenuzadan 8 sm qisqa.Shu uchburchakning gipotenuzasini ikkinchi katetga nisbatini toping. #1 15 #2 16 #3 #4 5 #5 29 16. Teng tomonli uchburchakning balandligi 9 sm.Shu uchburchakka ichki chizilgan aylananing radiusini toping. #1 3 #2 8 #3 6 #4 2,5 #5 5 17. Teng tomonli uchburchakning balandligi 24 sm.Shu uchburchakka ichki chizilgan aylananing radiusini toping. #1 3 #2 8 #3 6 #4 2,5 #5 5 18. Katetlari 120 va 90 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.Katetlaridan biri 8 ga teng bo'lgan to'g'ri burchakli uchburchak gipotenuzasining ikkinchi katetga nisbati 5:3 ga teng. Uchburchakning yuzini toping. 20.To'gri burchakli uchburchakning gipotenuzasi 25 ga, katetlaridan biri 10 ga teng. Birinchi katetning gipotenuzadagi proeksiyasini toping. 21. Aylana tashqarisidagi nuqtadan aylanaga ikkita urinma o’tkazilgan.Agar urinmalar orasidagi burchak 68 0
bo’lsa,aylananing urinish nuqtalari orasidagi katta yoyni toping. 22. Aylanani kesuvchi ikki vatari orasidagi burchaklardan biri 130 0 ga teng.Shu burchakka qo’shni bo’lgan burchaklarning yig’indisini toping. 23. Aylananing qismini tashkil qiluvchi AB yoyiga mos keluvchi markaziy burchak necha gradus bo’ladi? 24. Markazi O bo’lgan aylananing AB yoyi 60 0 ga teng. Agar aylananing radiusi 12 sm ga teng bo’lsa, A nuqtadan OB radiusgacha bo’lgan masofani toping. 25. Tashqi urinuvchi ikki aylana radiuslarining nisbati 4:5 kabi. Aylanalarning markazlari orasidagi masofa 18sm.Katta aylananing diametrini toping.
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