Aylanaga tashqi chizilgan ko‘pburchak — 9-sinf Geometriya test savollari

1.Aylanaga tashqi chizilgan to‘rtburchakning tomonlari AB = 7 sm, $BC$ = 9 sm, CD = 6 sm. AD ni toping (AB+CD = $BC$+AD).

• A)4 sm
• B)5 sm
• C)8 sm
• D)10 sm

2.Rombning diagonallari 12 sm va 16 sm. Unga ichki chizilgan aylananing radiusini toping.

• A)2,4 sm
• B)6 sm
• C)4,8 sm
• D)4 sm

3.To‘g‘ri burchakli uchburchakning katetlari 6 sm va 8 sm, gipotenuzasi 10 sm. Ichki chizilgan aylana radiusini toping $\left(r=\frac{a+b-c}{2}\right)$.

• A)1 sm
• B)2 sm
• C)3 sm
• D)4 sm

4.Uchburchak yuzi 84 sm², perimetri 42 sm. Ichki chizilgan aylananing radiusini toping.

• A)8 sm
• B)2 sm
• C)84 sm
• D)4 sm

5.Uchburchakka ichki chizilgan aylana radiusi 3 sm, uchburchak perimetri 40 sm. Uchburchak yuzini toping.

• A)60 sm²
• B)20 sm²
• C)120 sm²
• D)40 sm²

6.Aylanaga tashqi chizilgan to‘rtburchakning tomonlari AB = 10, $BC$ = 8, CD = 12. AD ni toping.

• A)30
• B)6
• C)14
• D)10

7.Muntazam uchburchakning tomoni 6 sm. Unga ichki chizilgan aylana radiusini toping.

• A)√3 sm
• B)√$\frac{3}{2}$ sm
• C)3√3 sm
• D)2√3 sm

8.Kvadratning tomoni 8 sm. Unga ichki chizilgan aylana radiusini toping.

• A)4√2 sm
• B)2 sm
• C)8 sm
• D)4 sm

9.Muntazam oltiburchakning tomoni 6 sm. Unga ichki chizilgan aylananing (apofema) radiusini toping.

• A)3 sm
• B)3√3 sm
• C)6√3 sm
• D)6 sm

10.Tashqi nuqtadan aylanaga o‘tkazilgan ikkita urinma kesmasi orasidagi bog‘lanish qanday?

• A)Ular o‘zaro teng
• B)Ular parallel
• C)Ular perpendikulyar
• D)Ular yig‘indisi radiusga teng