The angles 90°, 79° and t°, when added, are equal to 180°, because the total angle is a straight line.
Therefore, to calculate the value of t, we can use the equation below:
[tex]\begin{gathered} 90+79+t=180 \\ 169+t=180 \\ t=180-169 \\ t=11\degree \end{gathered}[/tex]
In the same way, the angles 109° and s° are supplementary, that is, their sum is equal to 180°, so we have:
[tex]\begin{gathered} s+109=180 \\ s=180-109 \\ s=71\degree \end{gathered}[/tex]
Therefore m
