MCQ
In $\triangle A B C$, side $B C$ has been produced to $D$. If $\angle B A C=45^{\circ}$ and $\angle A B C=55^{\circ}$, then $\angle A C D=$ ?


- A$80^{\circ}$
- B$90^{\circ}$
- ✓$100^{\circ}$
- D$110^{\circ}$

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