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.
Plane figures and solids can be changed (or transformed) by translation, reflection and dilation. The symmetry of shapes is related to translation, reflection and rotation. Triangle ABC and its reflection A'B'C' have the same size and shape, that is they are congruent. A translation is defined by specifying the distance and the direction of a movement. For example, triangle ABC is translated by 2 units to the right. Triangle ABC and its image A'B'C' have the same size and shape.
Reflection Reflection is the abrupt change in the direction of propagation of a wave that strikes the boundary between two different media. At least some part of the incoming wave remains in the same medium. Assume the incoming light ray makes an angle Î¸i with the normal of a plane tangent to the boundary. and T depend on the indices of refraction of the two media n1 and n2, the angle of incidence Î¸1, and the polarization of the incident light. We distinguish between p-polarization and s-polarization. Let the plane of incidence contain the normal to the boundary and the incident wave vector k1.