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15 টি বাহু বিশিষ্ট একটি সুষম বহুভুজের প্রতিটি অন্তঃস্থ কোণের পরিমাপ নির্ধারণ করুন।

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HTET PRT 2017 Official Paper
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  1. 106° 
  2. 156°
  3. 206°
  4. 256°

Answer (Detailed Solution Below)

Option 2 : 156°
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Detailed Solution

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প্রদত্ত:

15 টি বাহু বিশিষ্ট সুষম বহুভুজ

অনুসৃত সুত্র:

n বাহু বিশিষ্ট সুষম বহুভুজের অন্তঃস্থ কোণের যোগফল = (n − 2) × 180° যেখানে n হল বহুভুজের বাহুর সংখ্যা

গণনা:

15 টি বাহু বিশিষ্ট সুষম বহুভুজের অন্তঃস্থ কোণের যোগফল 

 (15 − 2) × 180° = 2340°

∴ সুষম বহুভুজের প্রতিটি অন্তঃস্থ কোণ = 2340/15 = 156° 
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