1.

In\[\Delta ABC,BC=AC\]and\[\angle B={{72}^{o}},\]find the measures of \[\angle A\]and \[\angle C.\]

A. \[\angle A={{72}^{o}},\angle C={{36}^{o}}\]              
B. \[\angle A={{36}^{o}},\angle C={{36}^{o}}\]
C. \[\angle A={{72}^{o}},\angle C={{48}^{o}}\]              
D. \[\angle A={{42}^{o}},\angle C={{66}^{o}}\]
Answer» B. \[\angle A={{36}^{o}},\angle C={{36}^{o}}\]


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