Ответ:
125°
Объяснение:∠B = ∠C
∠A = 180° - ∠C -> ∠A = 180° - ∠B
∠A - ∠B = 70°
180° - ∠B - ∠B = 70°
110° = 2∠B
∠B = 55°
∠A = 180° - 55 = 125°
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Ответ:
125°
Объяснение:
∠B = ∠C
∠A = 180° - ∠C -> ∠A = 180° - ∠B
∠A - ∠B = 70°
180° - ∠B - ∠B = 70°
110° = 2∠B
∠B = 55°
∠A = 180° - 55 = 125°