sudut cbf = sudut cde = 180 - 63 = 117
dan..
total sudut sebuah segi lima = 540
sehingga..
sudut bfe = 540 - (117 + 63 + 117 + 141)
= 540 - 438
sudut bfe = 102
tolong benarkan jika salah...
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sudut cbf = sudut cde = 180 - 63 = 117
dan..
total sudut sebuah segi lima = 540
sehingga..
sudut bfe = 540 - (117 + 63 + 117 + 141)
= 540 - 438
sudut bfe = 102
tolong benarkan jika salah...