Предмет: Математика, автор: dasha8let

3. Дан равнобедренный треугольник, в котором углы А и С равны. Известно, что угол В равен 80гр. Найдите углы А и С. А) 90гр Б) 50гр В) 45гр С) 80гр

Ответы

Автор ответа: chrispx
1

Ответ:

Б

Пошаговое объяснение:

Так как в треугольнике сумма всех углов составляет 180°

то 180°-80°= 100°

Значит углы А и С = 100°/2=50°

Автор ответа: belkinad58
1
Сумма всех углов треугольника равна 180гр. Следовательно
Угол А=С=(180-80):2=50гр
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