Mesh being generated with a script not showing up,My mesh isn't showing up in the scene view or the game view.

Hi I'm pretty new to code and making games so I follow tutorials a lot. I needed to make a mesh and I tried to find videos on it. I tried to create a small triangle and I got this code` public void Start() { Mesh mesh = new Mesh(); GetComponent().mesh = mesh;

     Vector3[] vertices = new Vector3[3];
     Vector2[] uv = new Vector2[3];
     int[] triangles = new int[3];

     vertices[0] = Vector3.zero;
     vertices[1] = new Vector3(50, 0);
     vertices[2] = new Vector3(-50, 0);

     triangles[0] = 0;
     triangles[1] = 1;
     triangles[2] = 2;

     mesh.vertices = vertices;
     mesh.uv = uv;
     mesh.triangles = triangles;
 }

` But for some reason it's just not showing up in the game view or the scene view, can anyone help me out on this? The game is 2d.