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#31414 Bangla Language & Literature ত্রিভুজ Level 0

ΔABC এর ∠B ও ∠C এর সমদ্বিখণ্ডকদ্বয় Oবিন্দুতে মিলিত হয়। তাহলে নিচের কোনটি সঠিক?

  1. A ∠ABC = 90° + 1/2 ∠A
  2. B ∠BOC = 1/2∠A
  3. C ∠BOC = 45° + 1/2 ∠A
  4. D ∠BOC = 90° + 1/2 ∠A
Answer: D - ∠BOC = 90° + 1/2 ∠A

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