Question

Find the measures of each exterior angle of an equilateral the angle.

Answer 1

$\begin{array}{c}ABE+{60}^0={180}^0\\ ABE={180}^0-{60}^0={120}^0\\ FAC+{60}^0={180}^0\\ FAC={180}^0-{60}^0={120}^0\\ ECG+{60}^0={180}^0\\ ECG={180}^0-{60}^0={120}^0\end{array}$