Question

Find the measures of the missing angle in the given triangle.

• A. ${30}^o$
• B. ${60}^o$
• C. ${90}^o$
• D. ${12}^o$

Answer 1

The correct option is B ${60}^o$

Given $△DEF$,
$\angle D={72}^{\circ }$
$\angle F={48}^{\circ }$
Sum of angles of the triangle, $\angle D+\angle E+\angle F=180$
$72+\angle E+48=180$
$\angle E={60}^{\circ }$