As exercise physiologist Harry Pino tells io9, muscle cells don't actually convert into fat, which is a common myth. What really happens is that the muscle cells - which are completely different than fat cells - become smaller, because now you donât have a demand of power and strength - theyâre not growing, he says.
The composition of two reflections across two parallel lines is equivalent to a translation. The translation vector is perpendicular to the lines. The length of the translation vector is twice the distance between the lines. The composition of two reflections across two intersecting lines is equivalent to a rotation. The center of rotation is the intersection of the lines. The angle of rotation is twice the measure of the angle formed by the lines.
A Glide reflection is a transformation involving a translation and a reflection in a line parallel to the translation. Some strip patterns (on belts or wallpaper borders) are based on glide reflections. A glide reflection is a type of isometry of the Euclidean plane: the combination of a reflection in a line and a translation along that line. Reversing the order of combining gives the same result. The combination of a reflection in a line and a translation in a perpendicular direction is a reflection in a parallel line.