Polygon
Huỳnh Anh Phương
31/07/2018 at 13:32
jimin bts cute 01/08/2018 at 01:52
I just guess is that pictute has 13 polygon

Alone 25/06/2018 at 07:10
\(S^o=\)\(\angle\)BAF + \(\angle\)ABC + \(\angle\)BCD + \(\angle\)CDE + \(\angle\)DEF + \(\angle\)EFA
=\(\angle\)AFB + \(\angle\)BAF + \(\angle\)ABF + \(\angle\)CBF + \(\angle\)BCF + \(\angle\)DCF + \(\angle\)CDF + \(\angle\)EDF + \(\angle\)DEF + \(\angle\)EFD + \(\angle\)CFD + \(\angle\)BFC
=\(180^o+180^o+180^o+180^o=720^o\)
Selected by MathYouLike 
Sory, I mistyped. It should've been \(720^o\) not \(540^o.\)
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