Vii variant Algebra

Geometriya

1. Tomonlari ayirmasi 3 ga teng bo‘lgan arifmetik progressiya tashkil qiluvchi ko‘pburchak perimetri 285 ga, eng katta tomoni esa 42 ga teng bo‘lsa, ko‘pburchak tomonlari sonini toping.

A) B) C) D)

Javob:

2. Berilgan savollarga to‘g‘ri javobni mos qo‘ying.

1) Qaysi nuqta vektor bo‘ylab ko‘chirishda nuqtaga ko‘chadi? 2) Parallel ko‘chirishda nuqta nuqtaga ko‘chdi. Bu almashtirishda qaysi nuqta nuqtaga ko‘chadi? 3) nuqtaga nisbatan simmetriyada nuqta qaysi nuqtaga o‘tadi? 4) Koordinata boshiga nisbatan simmetriyada nuqta qaysi nuqtaga o‘tadi?	A)
	B)
	C)
	D)
	E)
	F)

Javob:	1	2	3	4

3. Trapetsiya asoslari 2 cm va 4 cm, yon tomonlaridan biri 3 cm ga teng. Agar trapetsiya diagonallari o‘zaro perpendikular bo‘lsa, ikkinchi yon tomonini toping.

Javob: _______________________

4 . – aylananing diametri. Aylanadagi va nuqtalardan bu diametrga perpendikulyar kesmalar o‘tkazilgan. Agar cm, cm va cm bo‘lsa, ni uzunligini toping.

A) B) C) D)

Javob:

5. Rombni yuzi va unga ichki chizilgan doira yuzi bo‘lsa, rombning o‘tkir burchagi sinusini toping.

Javob: _______________________

6. Agar va vektorlar perpendikulyar bo‘lsa, va birlik vektorlar orasidagi burchakni toping.

Javob: _______________________
7. uchburchakda burchak burchakdan ikki marta katta. Agar , bo‘lsa, tomon uzunligini va orqali ifodalang.
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Javob: _______________________

8. – to‘g‘ri to‘rtburchak, – bissektrisa. , ga teng bo‘lsa, to‘g‘ri to‘rtburchak yuzini toping.

Yechish: _____________________________________________________________
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Javob: _______________________