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1. ΔABC এ BC বাহুকে D পর্যন্ত বাড়ানো হলো। ∠A = 45°, ∠ACD = 120°, ∠B = কত?

  • A. 75°
  • B. 75°
  • C. 75°
  • D. 75°

Answer: Option A

Explanation:


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