Question 244226
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*[tex \LARGE \ \ \ \ \ \ \ \ \ \ \frac{180(n\ -\ 2)}{n}\ =\ 135]


Multiply by *[tex \Large n] and remove parentheses


*[tex \LARGE \ \ \ \ \ \ \ \ \ \  180n\ -\ 360\ =\ 135n]


Add *[tex \Large -135n\ + 360] to both sides:


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ 45n\ =\ 360]


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ n\ =\ 8]


It's an octagon.


John
*[tex \LARGE e^{i\pi} + 1 = 0]
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