What is the sum of the interior angles of a regular polygon with 5 sides? A. 1260
B. 180
C. 360
D. 540

540 is the ans

Step-by-step explanation:

this is the correct answer

i only know the sequence of arithmetic it adds the first is 5+4 then it goes up as it adds to then it is 9+5 then 14+6 then to 20+7 and so on. 5,9,14,20,27,35.

step-by-step explanation:

step-by-step explanation:

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