x = 42
BAC : x + 18 = 42 + 18 = 60 (b)
besar sudut 1 segitiga = 180°
Besar sudut BAC
B. 60°
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x = 42
BAC : x + 18 = 42 + 18 = 60 (b)
besar sudut 1 segitiga = 180°
Besar sudut BAC
B. 60°