OpenGL不能成为一个完美的立方体

我是openGL的新手，我正在尝试学习基础知识。我已经为EBO创建了一个立方体的顶点及其索引，它应该是一个完美的立方体，这意味着所有边的长度都相同。但是我得到这个：https://i.gyazo.com/1fb82be379da9b18133a0ab0da8ccbf4.png这种长方形，正方形的脸。

顶点和索引如下：

    std::vector<GLfloat> _Vertices  = {
    // Positions          // Colors           // Texture Coords
                                                            //Front
     0.5f,  0.5f, 0.0f,   1.0f, 0.0f, 0.0f,   1.0f, 1.0f,   //0 Top Right
     0.5f, -0.5f, 0.0f,   0.0f, 1.0f, 0.0f,   1.0f, 0.0f,   //1 Bottom Right
    -0.5f, -0.5f, 0.0f,   0.0f, 0.0f, 1.0f,   0.0f, 0.0f,   //2 Bottom Left
    -0.5f,  0.5f, 0.0f,   1.0f, 1.0f, 0.0f,   0.0f, 1.0f,   //3 Top Left
                                                            //Right
     0.5f,  0.5f, 0.0f,   1.0f, 0.0f, 0.0f,   1.0f, 1.0f,   //4 Top left
     0.5f,  0.5f, -0.5f,  0.0f, 1.0f, 0.0f,   1.0f, 0.0f,   //5 Top right
     0.5f, -0.5f, -0.5f,  0.0f, 0.0f, 1.0f,   0.0f, 0.0f,   //6 Bottom right
     0.5f, -0.5f, 0.0f,   1.0f, 1.0f, 0.0f,   0.0f, 1.0f,   //7 Buttom left
                                                            //Left
    -0.5f,  0.5f, 0.0f,   1.0f, 0.0f, 0.0f,   1.0f, 1.0f,   //8 Top Right
    -0.5f,  0.5f,-0.5f,   0.0f, 1.0f, 0.0f,   1.0f, 0.0f,   //9 Buttom Right
    -0.5f, -0.5f,-0.5f,   0.0f, 0.0f, 1.0f,   0.0f, 0.0f,   //10 Buttom Leff
    -0.5f, -0.5f, 0.0f,   1.0f, 1.0f, 0.0f,   0.0f, 1.0f,    //11 Top Left
                                                            //Top
    -0.5f,  0.5f, 0.0f,   1.0f, 0.0f, 0.0f,   1.0f, 1.0f,   //12 Buttom Left
    -0.5f,  0.5f,-0.5f,   0.0f, 1.0f, 0.0f,   1.0f, 0.0f,   //13 Top Left
     0.5f,  0.5f,-0.5f,   0.0f, 0.0f, 1.0f,   0.0f, 0.0f,   //14 Top Right
     0.5f,  0.5f, 0.0f,   1.0f, 1.0f, 0.0f,   0.0f, 1.0f,   //15 Buttom right
                                                            //Back
     0.5f,  0.5f,-0.5f,   1.0f, 0.0f, 0.0f,   1.0f, 1.0f,   //16 Top Right
     0.5f, -0.5f,-0.5f,   0.0f, 1.0f, 0.0f,   1.0f, 0.0f,   //17 Bottom Right
    -0.5f, -0.5f,-0.5f,   0.0f, 0.0f, 1.0f,   0.0f, 0.0f,   //18 Bottom Left
    -0.5f,  0.5f,-0.5f,   1.0f, 1.0f, 0.0f,   0.0f, 1.0f,   //19 Top Left
                                                            //Buttom
    -0.5f, -0.5f,-0.0f,   1.0f, 0.0f, 0.0f,   1.0f, 1.0f,   //20 Top left
     0.5f, -0.5f, 0.0f,   0.0f, 1.0f, 0.0f,   1.0f, 0.0f,   //21 Top Right
     0.5f, -0.5f,-0.5f,   0.0f, 0.0f, 1.0f,   0.0f, 0.0f,   //22 Buttom Right
    -0.5f, -0.5f,-0.5f,   1.0f, 1.0f, 0.0f,   0.0f, 1.0f    //23 Buttom Lrft

};



    std::vector<GLuint> Indices = {
    0, 1, 2, // Firs square
    2, 3, 0,
    4, 5, 6,
    6, 7, 4,
    8, 9, 10,
    10, 11, 8,
    12, 13, 14,
    14, 15, 12,
    16, 17, 18,
    18, 19, 16,
    20, 21, 22,
    22, 23, 20
};

现在，如果您需要部分代码，请在评论部分询问。谢谢。