A) \[{{360}^{o}}\]
B) \[{{270}^{o}}\]
C) \[{{540}^{o}}\]
D) \[{{180}^{o}}\]
Correct Answer: A
Solution :
From\[\Delta ABC\]and \[\Delta DEF,\] \[\angle A+\angle B+\angle C={{180}^{o}}\]and \[\angle D+\angle E+\angle F={{180}^{o}}.\] \[\therefore \]\[\angle A+\angle B+\angle C+\angle D+\angle E+\angle F={{360}^{o}}\]
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