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    當(dāng)前位置: 初中數(shù)學(xué) / 解答題
    • 1. (2021七下·長白期中) 已知:如圖, , 說明 . 請你補(bǔ)全推理過程和空缺的推理依據(jù).

      解:∵(已知),

                        ▲                                    ▲                  ),

      又∵(已知),

                        ▲                                    ▲                  ),

                        ▲                                    ▲                  ),

      (等量代換).

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