Предмет: Геометрия, автор: butenkobogdan198

в трапеции ABCD угол А=41, угол D=45 найдите сумму угла B и угол C

Ответы

Автор ответа: elilian

2

Ответ:

274°

Объяснение:

В трапеции сумма углов, прилежащий к боковой стороне, равна 180°. Следовательно: ∠В = 180° - ∠А = 180° - 41° = 139° ∠С = 180° - ∠D = 180° - 45° = 135° ∠В + ∠С = 139° + 135° = 274°

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