A regular polygon has interior angles of 144 degrees. How many sides does the polygon have?

It is a decagon, if you google it up, it says that a decagon has 10 sides.

Each Side is 144 degrees. Therefore, it is a decagon. 10 sides

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(n - 2)  (180) / n  = 144

(n - 2) (180)   = 144n

180n  - 360  = 144n

180n - 144n  =  360

36n  = 360

n = 10