Jawab:
76. C. 100°
77. B. 35°
Penjelasan dengan langkah-langkah:
76. C
∠A = 180° - 140° = 40°
∠A = ∠C (Segitiga sama sisi)
Maka ∠ABC atau ∠B = 180° - 40° - 40° = 100°
∠C = 180° - 125° = 55°
∠A = 90° (Segitiga siku siku)
Maka ∠A = 180° - 90° - 55° = 35°
Jawaban:
Semoga membantu.
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Jawab:
76. C. 100°
77. B. 35°
Penjelasan dengan langkah-langkah:
76. C
∠A = 180° - 140° = 40°
∠A = ∠C (Segitiga sama sisi)
Maka ∠ABC atau ∠B = 180° - 40° - 40° = 100°
77. B. 35°
∠C = 180° - 125° = 55°
∠A = 90° (Segitiga siku siku)
Maka ∠A = 180° - 90° - 55° = 35°
Jawaban:
76. C. 100°
77. B. 35°
Semoga membantu.