Markaziy simmetriya va burish — 9-sinf Geometriya test savollari

1.K(4;1) nuqtaning koordinata boshiga nisbatan markaziy simmetrik nuqtasini toping.

• A)(-4;1)
• B)(1;4)
• C)(4;-1)
• D)(-4;-1)

2.A(5;-3) nuqtaning O(0;0) markazga nisbatan simmetrik nuqtasini toping.

• A)(3;-5)
• B)(5;3)
• C)(-5;-3)
• D)(-5;3)

3.A(5;4) nuqtaning M(2;1) nuqtaga nisbatan markaziy simmetrik nuqtasini toping.

• A)(-1;2)
• B)(9;7)
• C)(1;-2)
• D)(-1;-2)

4.B(4;1) nuqta koordinata boshi atrofida 90° (soat strelkasiga teskari) burilgan. Natijaviy nuqtani toping.

• A)(1;-4)
• B)(-4;1)
• C)(4;-1)
• D)(-1;4)

5.C(3;-6) nuqta koordinata boshi atrofida 180° burilgan. Natijaviy nuqtani toping.

• A)(3;6)
• B)(-3;-6)
• C)(-3;6)
• D)(6;-3)

6.D(2;5) nuqta koordinata boshi atrofida 90° (soat strelkasi yo‘nalishida) burilgan. Natijaviy nuqtani toping.

• A)(-5;2)
• B)(-2;5)
• C)(5;-2)
• D)(2;-5)

7.Markaziy simmetriya necha darajali burilishga ekvivalent?

• A)270°
• B)180°
• C)360°
• D)90°

8.180° burilish markaziy simmetriyaga ekvivalentmi?

• A)Ha, ular bir xil almashtirish
• B)Faqat uchburchaklar uchun to‘g‘ri
• C)Faqat kvadratlar uchun to‘g‘ri
• D)Yo‘q, ular butunlay boshqa almashtirish

9.Parallelogramning markaziy simmetriya markazi qayerda joylashadi?

• A)Bir uchida
• B)Diagonallarining kesishish nuqtasida
• C)Markazi yo‘q
• D)Tomonining o‘rtasida

10.Har qanday burilish kesma uzunligini o‘zgartiradimi?

• A)Yo‘q, saqlaydi
• B)Ha, kamayadi
• C)Faqat 90° da o‘zgaradi
• D)Ha, ortadi