Class 2 - 3 to 5 axle vehicle. any Class 1 vehicle with a 1, 2 or 3 axle trailer. any Class 1 vehicle with a 1, 2 or 3 axle unit that straddles the vehicle body. a 3 or 4 axle RV with single wheels. a 3 or 4 axle limousine. tractor-trailer, car carrier or truck with 5 to 9 axles.
Reflection Symmetry. The simplest symmetry is Reflection Symmetry (sometimes called Line Symmetry or Mirror Symmetry). It is easy to see, because one half is the reflection of the other half. of photo magic. it is not perfect symmetry, as the image is changed a little by the lake surface.
In geometry, a translation slides a thing by a: Ta(p) = p + a. In physics and mathematics, continuous translational symmetry is the invariance of a system of equations under any translation. Discrete translational symmetry is invariant under discrete translation.