Question

If m<10=77, m<7=47 and m<16=139, find the measure of the missing angle m<13=?

Answer 1

The angle 10 and angle 13 are pair of vertical angles. So measure of angle 10 and angle 13 are equal. So,

`\begin{gathered} \angle13=\angle10 \\ \angle13=77 \end{gathered}`

So measure of angle 13 is 77 degree.