Question

Determine the measure of $\angle m$.

Answer 1

The given triangle is isosceles.That means that not only are two of the sides equal but two of the angles are also equal.

$\Rightarrow m+m+{26}^{\circ }={180}^{\circ }$

$\Rightarrow 2m={180}^{\circ }-{26}^{\circ }={154}^{\circ }$

$\therefore m=\frac{{154}^{\circ }}{2}={77}^{\circ }$

$\therefore$ Each angle $m$ measures ${77}^{\circ }$