MCQ Practice Mathematics 📖 ΔABC এর ∠B ও ∠C এর সমদ্বিখণ্ডকদ্বয় Oবিন্দুতে মিলিত হয়। তাহলে নিচের কোনটি সঠিক? A ∠ABC = 90° + 1/2 ∠A B ∠BOC = 1/2∠A C ∠BOC = 45° + 1/2 ∠A D ∠BOC = 90° + 1/2 ∠A Favorite Practice Add to Book Explanation & Answer Detailed explanations and answers are restricted. Unlock full access by logging in to your account. 🔒 Unlock the detailed explanation and answers Log In / Sign Up