topshiriq. Berilgan savollarga javob tayyorlang. Gеomеtrik figuralarni sirkul va chizg‘ich yordamida yasash bosqichlari. Figuralar yuzini o`lchash usullari. Tengdosh va teng figuralardan tashkil topgan figuralar

26-variant.
1 – topshiriq. Berilgan savollarga javob tayyorlang.

1. 
   Gеomеtrik figuralarni sirkul va chizg‘ich yordamida yasash bosqichlari.
   
2. 
   Figuralar yuzini o`lchash usullari. Tengdosh va teng figuralardan tashkil topgan figuralar. To`g`ri to`rtburchak va boshqa figuralarning yuzini topish.
   

2 – topshiriq. Test
1. Quyidagi xossalarga ega bo’lgan geometrik shaklni ko’rsating: a) 4ta uchi bor, b) 4ta tomoni bor, c) barcha tomonlari teng, d) to’g’ri burchakka ega

A) Trapetsiya

B) Parallelogram

C) To’g’ri to’rtburchak

D) Kvadrat

2. Uchburchakning ikkita tomoni 0,5 va 7,9 ga teng. Uchinchi tomoning uzinligi butun son ekanligini bilgan xolda ushbu tomon topilsin.

A)8

B) 9

C) 7

D)10

3. Perimetri 30 sm ga teng bo’lgan uchburchak bissektrisasi bilan ikkita uchburchakka ajralgan. Bu uchburchaklarning perimetrlari 16 sm va 24 sm bo’lsa, bissektrisaning uzunligini toping.

A) 4

B) 3,

C)7,

D) 5,

4. Teng yonli uchburchakning uchidagi burchagi 94^oga teng. Asosdagi burchaklarning bissektrisaliri o’tkazilgan. Bu bissektrisalar orasidagi o’tkir burchakni toping.

A) 43^O,

B) 37^O,

C) 48^O,

D) 47^O

5. To’g’ri burchakli uchburchak gipotenuzasi 15sm, katetlari esa 3:4 nisbatda bo’lsa, uning katta katetini toping:

A) 14

B) 16

C) 12

D)9

6. To’g’ri burchakli uchburchakda gipotenuza 20sm, katetlar yig’indisi esa 28sm ga teng. Uchburchakning yuzini hisoblang.

A) 100

B) 96

C) 80

D) 120

7. Aylananing markaziy burchagi 60, u tiralgan yoyning uzunligi 10 sm ga teng bo’lsa, aylananing radiusini toping.

A)

B) 15

С)

D)

8. Radiusi 1 ga teng aylana uchta yoyga bo’lingan, ularga mos markaziy burchaklar 1,2 va 6 ga propotsional. Eng katta yoyning o’lchovini toping.

A)

B) 2π

C)

D)

9. Parallelogrammning bir tomoni ikkinchi tomonidan 4 marta katta, perimetri 20Ö2 sm, o’tkir burchagi 45^oga teng. Parallelogrammning yuzi hisoblansin.

A) 16

B) 32

C) 16

D) 8

10. ABCD rombning perimetri 14 ga teng. Pomb tomonlarining o’rtalari tutashtirilsa, yangi A₁ B₁ C₁ D₁ to’rtburchak hosil bo’ladi. A₁ B₁ C₁ D₁ to’rtburchak tomonlarining o’rtalari yangi A₂ B₂ C₂ D₂ to’rtburchakning uchlaridir. A₂ B₂ C₂ D₂ to’rtburchakning perimetri topilsin.

A) 10;

B) 7;

C) 8;

D) 6;
3 – topshiriq:

1. 
   tеnglamaning yechimlar to‘plamini toping.
   
2. 
   tеngsizlikning yechimlar to‘plami tоpilsin.
   
3. 
   - 5х + 6 = 0 tеnglamaning yechimini toping.
   
4. 
   tenglamani yeching.
   
5. 
   tengsizlikni yeching.
   

4 – topshiriq:

1. 
   Uchburchakning asosi 26 ga, yon tomonlari 13 va 19 ga teng. Asosiga tushirilgan medianasini toping.
   
2. 
   Berilgan a,b,c tomonlari bo`yicha uchburchak yasang
   

a=2 sm, b=3 sm, c=4 sm

3. 
   Quyidagi ma`lumotlarga ko`ra ABC uchburchakni yasang:
   

1. 
   Ikki tomoni va ular orasidagi burchakka ko`ra:
   

1. 
   AB=5 sm, AC=6 sm, 40⁰
   

2. 
   Bir tomoni va unga yopishgan burchaklari bo`yicha:
   

AB=6 sm, , 50⁰

4. 
   Ikki tomoni va bu tomonlardan kattasi qarshisida yotuvchi burchagi bo`yicha uchburchak yasang:
   

a=6 sm, b=4 sm, 70⁰
5 – topshiriq:
1. Agar to`gri to`rtburchakning yuzi 48 sm asosi 8 sm bo`lsa, uning bo`yini toping.

2. Agar uchburchakning asosi 9 sm balandligi 15 sm bo`lsa, yuzini toping.

3. Parallelogramning asosi 6 m va mos balandligi 7 sm bo`lsa uning yuzini toping.

4. Trapetsiyaning balandligi 5 m kichik asosi 6 sm va katta asosi kichik asosidan ikki yarim marta katta bo`lsa trapetsiyaning yuzini toping.

5. 3 ta tomoniga ko`ra uchburchakning yuzini toping: a=5, b=5, c=6