It should've learned it at level 37. If you used a cheat to get Lucario or you left it in the daycare, Aura Sphere might have been replaced with a different move.
A sphere has 0 edges.
None.
360 degrees
A sphere has 0 edges and 0 faces. Thus implying that it has no verticies either. This is obvious. Spheres are round.
level 30
at level 55
Level 40
Level 48
level 56
level 48.
it evolves at level 54
High-level-control fluoroscopy increases radiation dose to the patient.