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如图,在△ABC中,∠ABC=80°,∠ACB=50°,BP平分∠ABC,CP平分∠ACB,求∠BPC的度数.对于上述问题,在以下解答过程的空白处填上适当的内容(理由或数学式)解:∵BP平分∠ABC...
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教案备课库《初一年级数学同修学案201612041》真题及答案
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