MCQ
$A B C D$ एक समचतुर्भुज है, जिसमें $\angle A C B=40^{\circ}$ है। तब $\angle A D B$ है
- A$45^{\circ}$
- ✓$50^{\circ}$
- C$60^{\circ}$
- D$40^{\circ}$

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