1 Vehicle B is positioned wrong. Side armor is weaker than front and is a bigger target. Additionally, it is easier to get detracked in that position.
2 Right position
3 Best position. The front armor is angled (it's harder to penetrate it, and the side armor with such angle is impenetrable)
4 Bad riding out from behind an obstacle
5 Good riding out with angled armor (armor placement)
6 Right riding out with sidescrap (using the side armor)
Purple rectangle shows the difference gained by angling the front armor. When angling, the side of the vehicle should be hidden behind an obstacle. You should XXX less when in open to avoid unnecessary risk of damaging the side.