Предмет: Геометрия, автор: Катюшкпосо

Помогите пожалуйста срочно надо

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Автор ответа: rybkinaekaterina

Угол ABC=углуCBK=25 градусов(т.к. треугольник ACB= треугольнику CBK по 3-му признаку равенства треугольников). Сл-но угол ABK=25+25=50(градусов).
УголDBA=180градусов-50градусов=130градусов

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