В равнобедренном треугольнике ABC с основанием АС проведена биссектриса AD. Найдите ∠ADC, если ∠C= 50°
165
323
Ответы на вопрос:
Решение. Поскольку AD — биссектриса (рис. 145), то ZCAD =
= 50/2 = 25°, а значит, ZADC = 180° - 50° - 25° = 105°.
Ответ. 105°.
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