Question

find the value of x and identify the type of polygon

Answer 1

the figure is a quatrilateral becase have 4 sides

the sum of the internal angles of a quadrilateral is 360

then

$\begin{gathered} 60+x+x+x=360 \\ 3x=360-60 \\ x=\frac{300}{3} \\ \\ x=100 \end{gathered}$

so, the right option is D