Element of what?? Principle of what ???
Answer:
An oval?
Explanation:
I'm not sure if that's a part of a bike, but I would say oval since the circle is an oval shape. Correct me if I'm wrong, but I hope this helps and good luck! :D
Yes. Say we have a C major triad (CEG). With the first inversion, our bass note (C) is going to be moved to the top of our triad. So, now our triad is spelled EGC