Предмет: Математика, автор: Аноним

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Автор ответа: sergeevaolga5

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Ответ:

∡A=50°, ∡D=130°, ∡D=50°

Пошаговое объяснение:

Трапеция АВСD - равнобедренная, АВ=CD,

AD и BC - основания, ∡B=∡C, ∡A=∡D

∡B=∡C=130°,

∡A+∡B+∡C+∡D=360°

∡A+∡D=360°-2*130°=360°-260°=100°

∡A=∡D => ∡A=∡D=100°:2=50°

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