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题型:证明题 题类: 难易度:容易

山东省临沂市莒南县2023-2024学年七年级下学期期中数学试题

填充证明过程和理由:如图,平分 , 求证:

证明:∵

(                                 ),

又∵

(                                      ),

平分

∴__________________________(                                             )

∴__________________________(                                             )

(                                           )

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