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perbandingn sudut Δ KLM = 4 : 5 : 6
faktor pengali = x
jumlh sudut Δ = 180
maka :
180 = sudut (1+2+3)
180 = 4x + 5x + 6x
180 = 15x
x = 180/15
x = 12⁰
jadi :
sudut 1 = 4 x 12 = 48⁰ (sudut terkecil)
sudut 2 = 5 x 12 = 60⁰
sudut 3 = 6 x 12 = 72⁰