Предмет: Геометрия, автор: vladislavabutrina198

У рівнобедреному трикутнику кут при основі дорівнює 50 Знайдіть кут при вершині. а)100º; б)50º ; в) 80º; г)120º.

Ответы

Автор ответа: Alexitinin

2

Ответ: В) 80

Объяснение: Сумма всех углов треугольника равна 180 градусам. Так же если треугольник равнобедренный то два его угла при основе равны. 50 + 50 = 100. Теперь узнаем третий угол:

180 - 100 = 80

vladislavabutrina198: спасибо

vladislavabutrina198: ты лучший

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