jumlah besar sudut segitiga yaitu 180
∠C = 180° - (∠A + ∠B)
180° - (48° + 72°)
180° - 120°
∠C = 60° (a)
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jumlah besar sudut segitiga yaitu 180
∠C = 180° - (∠A + ∠B)
180° - (48° + 72°)
180° - 120°
∠C = 60° (a)