Histology (compound of the Greek words: á¼±ÏÏÏÏ histos tissue, and - Î»Î¿Î³Î¯Î± -logia science) is the study of the microscopic anatomy of cells and tissues of plants and animals.
Reflection in the x-axis. A reflection in the x-axis can be seen in the picture below in which A is reflected to its image A'. The general rule for a reflection in the x-axis: (A,B) (A, âB) Reflection in the y-axis. A reflection in the y-axis can be seen in the picture below in which A is reflected to its image A'.
1 The angle between this ray and the perpendicular or normal to the surface is the angle of incidence.  The reflected ray corresponding to a given incident ray, is the ray that represents the light reflected by the surface. The angle between the surface normal and the reflected ray is known as the angle of reflection.