Предмет: Геометрия, автор: Luisthffkh

Найдите угол BAD четырехугольника ABCD.(ответы:100,90,80,110

Ответы

Автор ответа: KuOV

3

Ответ:

80°

Объяснение:

∠BCD = 45° + 55° = 100°

Если четырехугольник вписан в окружность, то суммы его противолежащих углов равны 180°.

∠BAD + ∠BCD = 180°

∠BAD = 180° - ∠BAD = 180° - 100° = 80°

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