Geometry math question no Guessing and Please show work thank you
(n - 2) [tex] \times [/tex] 180
(6 - 2) [tex] \times [/tex] 180
4 [tex] \times [/tex] 180 = 720
2x + 9x + 2x + 9x + 9x + 9x = 720
40x = 720
x = 18
Vertex D: 9(18) = 162
D. 162