Ko'pburchak ichki va tashqi burchaklarining xossasi — 8-sinf Geometriya test savollari

1.Qavariq ko'pburchakning ichki burchaklari yig'indisi 2160° ga teng. Bu ko'pburchakning necha tomoni bor?

• A)12
• B)6
• C)14
• D)16

2.Muntazam ko'pburchakning har bir ichki burchagi 156° ga teng. Bu ko'pburchak necha tomonli?

• A)15
• B)18
• C)12
• D)10

3.Muntazam ko'pburchakning tashqi burchagi ichki burchagidan 4 marta kichik. Ko'pburchak necha tomonli?

• A)8
• B)10
• C)9
• D)12

4.To'rtburchak burchaklaridan uchtadan olib yig'indisi hisoblanganda (har safar boshqa bir burchak hisobga olinmagan holda), natijalar mos ravishda 250°, 260° va 270° chiqdi. To'rtburchakning eng kichik burchagini toping.

• A)90°
• B)60°
• C)70°
• D)50°

5.Ko'pburchakning barcha uchidan bittadan olingan tashqi burchaklarining yig'indisi uning ichki burchaklari yig'indisidan 4 marta kichik. Ko'pburchak necha tomonli?

• A)8
• B)10
• C)12
• D)6

6.Ichki burchaklari yig'indisi 3600° bo'lgan qavariq ko'pburchakning necha tomoni bor?

• A)20
• B)24
• C)18
• D)22

7.Muntazam ko'pburchakning har bir tashqi burchagi mos ichki burchagidan 120° kichik. Ko'pburchak necha tomonli?

• A)15
• B)9
• C)12
• D)10

8.To'qqizburchakning ichki burchaklari yig'indisini toping.

• A)1080°
• B)1260°
• C)1440°
• D)1620°

9.Muntazam o'n beshburchakning bitta tashqi burchagini toping.

• A)20°
• B)30°
• C)18°
• D)24°

10.Muntazam yigirmaburchakning bitta ichki burchagini toping.

• A)160°
• B)168°
• C)162°
• D)170°