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DongHai Zhang

  • GeoGebra培训手册素材

    Book

    DongHai Zhang

  • Similar triangles inscribed iteration

    Activity

    DongHai Zhang

  • 中点轨迹

    Activity

    DongHai Zhang

  • 电子表格建点

    Activity

    DongHai Zhang

  • 轨迹2016.4.16

    Activity

    DongHai Zhang

  • 三棱锥的三视图

    Activity

    DongHai Zhang

  • 几何体

    Activity

    DongHai Zhang