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Verified answer
Besar ∠CBD = 120°Besar ∠ACB = ?
Jawab:
Karena segitiga ABC merupakan segitiga sama kaki, maka
∠ACB + ∠CBD = 180° (karena saling berpelurus)
∠ACB + 120° = 180°
∠ACB = 180° - 120°
∠ACB = 60°