Jawab:
Karena AB sejajar dengan DE
Maka ∠BAC = ∠CDE
∠ABC = ∠DEC
∠ABC = 180°-85°-45° = 50°
∠DEC = ∠ABC = 50°
∠CDE = ∠BAC = 85°
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Jawab:
Karena AB sejajar dengan DE
Maka ∠BAC = ∠CDE
∠ABC = ∠DEC
∠ABC = 180°-85°-45° = 50°
∠DEC = ∠ABC = 50°
∠CDE = ∠BAC = 85°