Aylanaga ichki chizilgan burchak — 8-sinf Geometriya test savollari

1.O markazli aylanada $\angle$AOB = 96° (AB yoy yarim aylanadan kichik). C nuqta AB yoyning katta yoyida yotadi. $\angle$ACB ichki chizilgan burchakni toping.

• A)48°
• B)96°
• C)192°
• D)132°

2.Xuddi shu aylanada $\angle$AOB = 96°. D nuqta AB ning kichik yoyida yotadi, ya'ni $\angle$ADB burchak katta yoyga tiraladi. $\angle$ADB ni toping.

• A)132°
• B)48°
• C)264°
• D)168°

3.Ichki chizilgan burchak 37° ga teng. Unga tiralgan yoyning gradus o'lchovini toping.

• A)74°
• B)37°
• C)148°
• D)18,5°

4.Ichki chizilgan burchak yarim aylanadan katta bo'lgan yoyga tiralgan. Agar bu yoyning gradus o'lchovi 250° bo'lsa, ichki chizilgan burchakni toping.

• A)125°
• B)110°
• C)250°
• D)235°

5.Uchburchak ABC aylanaga ichki chizilgan, uning uchlari ajratgan yoylarning gradus o'lchovlari nisbati 3 : 5 : 7 kabi. Uchburchakning eng katta burchagini toping.

• A)84°
• B)72°
• C)60°
• D)96°

6.Masalada (yoylar nisbati 3 : 5 : 7) uchburchakning eng kichik burchagini toping.

• A)36°
• B)24°
• C)48°
• D)60°

7.AB — aylananing radiusiga teng vatar. Aylananing A va B dan farqli, AB ning katta yoyida yotgan ixtiyoriy C nuqtasidan bu vatar necha gradusli burchak ostida ko'rinadi?

• A)30°
• B)60°
• C)15°
• D)120°

8.O markazli aylanada $\angle$AOB = 88°. Xuddi shu AB yoyga (kichik yoyga) tiralgan $\angle$ACB ichki chizilgan burchakni toping (C — katta yoyda).

• A)44°
• B)88°
• C)22°
• D)176°

9.Diametrga (yarim aylanaga) tiralgan ichki chizilgan burchak nechaga teng?

• A)90°
• B)180°
• C)60°
• D)45°

10.Bitta yoyga tiralgan ikkita ichki chizilgan burchak haqida qanday tasdiq to'g'ri?

• A)Ular teng
• B)Ular yig'indisi 180° ga teng
• C)Biri ikkinchisidan 2 marta katta
• D)Ular perpendikular