Update lab1/example/example.js

lab1/example/example.js

@@ -87,7 +87,7 @@ function initVertexBuffers(gl) {
     3/5,  -5/7,
 
   ]);
-  const n = vertices.length; // The number of vertices
+  const n = vertices.length / 2; // The number of vertices
 
   // Create a buffer object
   const vertexBuffer = gl.createBuffer();