question_answer

Find the measure of each angle of a triangle if one angle is two times of another and third one is the sum of the both angles.

A)  \[45{}^\circ ,\,\,30{}^\circ \,\,and\,\,80{}^\circ \]         

B)  \[40{}^\circ ,\,\,60{}^\circ \,\,and\,\,80{}^\circ \]

C)  \[30{}^\circ ,\,\,60{}^\circ \,\,and\,\,90{}^\circ \]

D)  All of these

E)  None of these