A) \[180{}^\circ \]
B) \[360{}^\circ \]
C) \[270{}^\circ \]
D) none of these
Correct Answer: B
Solution :
The sum of angles of a quadrilateral \[\angle BDC={{42}^{o}}\] because, we know that the sum of angles of any polygon = (No. of sides-2) \[\angle ACB\]
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