3D Modeling - Learn OpenGL ES: For Mobile Game and Graphics Development - page 147

7. Press the A key to select all vertices. Three vertices are selected ( Figure
4-24 ) , representing the corners of the equilateral triangle you must cre-
ate.
Figure 4-24 . Selecting vertices for creating an equilateral triangle
8. Finally, press the F key to create a face from the selected vertices.
The shape you modeled is an equilateral triangle, shown in Figure 4-25 . Toggle the
Wireframe mode to get a better look at the object.