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1. ABCD সামান্তরিকের ∠B=75° হলে ∠A এর মান কত?

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

Answer: Option C

Explanation:

Here, 
∠B=∠C=75°
So, (360-75×2)°=210°
∠A+∠D=210°
So, ∠A=(210/2)°=105°
(ans)

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