Предмет: Геометрия, автор: Bronenosik

помогите пожалуйста​

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Ответы

Автор ответа: kpoilio
1

Ответ:

уголВ =180-130=50, а угол А =180-90-50=40

ответ: в=50, А=40

Автор ответа: 4036109
1

Ответ:

Справа от B допиши еще D

∠ABD и ∠ABC - смежные =>

∠ABC = 180°-130°=50°

∠ABC + ∠A + ∠C = 180°(по теореме о сумме углов треугольника) =>

∠A=180°-90°-50°=40°

Ответ: А=40°,В=50°

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