The exterior angles of an octagon are 42°, 55°, 39°, 20°, 62°, 45°, and 47°. What is the measure of the eighth exterior angle? Show equations and all work that leads to your answer. Help Please(:

Question

anonymous · Answer

@jigglypuff314 Help?

jigglypuff314 · Answer

for any polygon, the sum of all it's exterior angles is 360 degrees http://www.mathsisfun.com/geometry/exterior-angles-polygons.html so 42 + 55 + 39 + 20 + 62 + 45 + 47 + x = 360 add like terms then solve for x :)

anonymous · Answer

So
42 + 55 + 39 + 20 + 62 + 45 + 47=310 so x must equal fifty to =360?

jigglypuff314 · Answer

umm... solve for x when given   x + 310 = 360

jigglypuff314 · Answer

oh yeah nvm   x = 50 is right :)

anonymous · Answer

x=50 then right

anonymous · Answer

Thankkks

jigglypuff314 · Answer

you're welcome :)