Short answer - yes ![Smile Smile](https://forums.ldraw.org/images/smilies/smile.png)
Each corner should have an edgeline. If primitives meet (triangle or quats) at an angle to imitate a round structure you should put an optional line there.
![Smile Smile](https://forums.ldraw.org/images/smilies/smile.png)
Each corner should have an edgeline. If primitives meet (triangle or quats) at an angle to imitate a round structure you should put an optional line there.