Minimum possible interior angle in a regular polygon is _____. 70 b. 60 c. 90 d. 120
2 answers:
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First we multiply 2r*r and it gives us 
.
Then -5r, + 20r = 15r
Then -5*10 gives us -50.
So the answer is:
Then -5r, + 20r = 15r
Then -5*10 gives us -50.
So the answer is: