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Sudut 2 = 3 / (2+3+5) x 180 = 3/9 x 180 = 54 derajat
Sudut 3 = 5 / (2+3+5) x 180 = 5/9 x 180 = 90 derajat
jumlah = 180
sudut dg di perbandingan adl 2
2/10 x 180 = 36 derajat
sudut dg di perbandingan adl 3
3/10 x 180 = 54 derajat
sudut dg di perbandingan adl 5
5/10 x 180 = 90 derajat