help me!

来源：学生作业帮助网编辑：作业帮时间：2024/04/27 17:47:12

help me!
help me!

help me!
∵∠1+∠4=180°,∠1+∠2=180°
∴∠2=∠4．
∴EF∥AB
∴∠3=∠ADE
∵∠3=∠B,
∴∠B=∠ADE
∴DE∥BC
∴∠AED=∠ACB
∴∠AED=∠C

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