Предмет: Геометрия, автор: MilenaDrakonchik

Срочно!!! Даю 25 баллов!
У треугольников ABC и DBC общая сторона BC, AB = BD, AC = CD, ∠ABC = 41°. Чему равен ∠ABD ?
Ответ: ∠ABD = °

Aliek7: 82° для тех у кого лимит

vmrotermel: Спасибо большое

botbaevamira: Рет

Ответы

Автор ответа: mathkot

75

Ответ:

ABD = 82 градуса.

Объяснение:

Треугольник ABC = DBC по третьему признаку равенства треугольника(AB = BD, AC = CD по условию; BC - общая) следовательно из равенства треугольников следует равенство соответствующих углов, тогда угол ABC = DBC, то есть ABD = ABC + DBC =2DBC = 2ABC = 2 * 41 = 82 градуса.

Приложения:

MilenaDrakonchik: Поздно.

amina2008ggg: Спасибо, правильно

arsenshamil91: Спс

bekesheva75: это правилно или нет

salaevaaisha89: правильно спасибо

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