9-sonli umumiy o’rta maktabi sinf o’quvchisi

Tekshirdi D. Qaxxorov


6-nazorat ishi


Sana ­­­­­­­­­­­­­­­­­­­­­­­­_{–––––––––––––––––––––––––––––––––––}

1. 
   Radiusi 6 sm bo’lgan aylananing O markazidan 4 sm uzoqlikda P nuqta olindi. P nuqta orqali AB vatar o’tkazildi. Agar AP = 2 sm bo’lsa, PB kesmani toping.
   

2. 
   Katetlari 15 sm va 20 sm bo’lgan to’g’ri burchakli uchburchak kichik katetining gipotenuzadagi proyeksiyasini toping.
   

3. 
   AB va CD kesmalar parallel to’g’ri chiziqlarda yotadi. Agar AB=12 sm, CD=15 sm va AB kesmaning biror m to’g’ri chiziqdagi proyeksiyasi 8 sm bo’lsa, CD kesmaning shu m to’g’ri chiziqdagi proyeksiyasini toping.
   

4. 
   ABCD to’rtburchakning uchlarini markaz qilib bir xil radiusli sektorlar yasalgan. Bu sektorlardan ixtiyoriy ikkitasi umumiy nuqtaga ega emas hamda barchasining radiusi 1 sm. Sektorlar yuzlarining yig’indisini toping.
   

5. 
   Kesmalar proyeksiyasi va proporsionallik xaqida nima bilasiz.
   

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Savol №	1	2	3	4	5	Qo’shimcha savol	Jami ball
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