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Verified answer
Jawab<BCD = sudut luar segitiga
<BCD = <CA B + <ABC
115 = 35 + <ABC
<ABC = 115-35 = 80
Verified answer
Sudut ACB = 180-115 = 65°total sudut pada segitiga 180°
sudut ABC = 180-(35+65)
sudut ABC = 180-100 = 80
jadi sudut ABC = 80°