question_answer

The sides \[BC,\,\,CA\] and \[AB\] of \[\Delta ABC\] are produced in order to form exterior angles\[\angle ACD,\,\,\angle BAE\]and\[\angle CBF\]. Find\[\angle ACD+\angle BAE+\angle CBF\].

A) \[{{180}^{o}}\]                                  

B)        \[{{270}^{o}}\]                      

C)        \[{{360}^{o}}\]                                  

D)        \[{{540}^{o}}\]