The semi-straight input consists of two different parts: the prefix '' semi '' which translates as '' medium '' and the word '' rectus '' which can be defined as '' straight '', the semi-straight is used more than all in geometry to differentiate each of the parts, where every line can be divided by any of the points that compose it.
But it can also be presented as the quantity that separates from a straight line that is composed of all the points that are located towards the two lateral parts of a certain fixed point.
The ray has as its origin the point that gives it the beginning and extends to infinity, the line has neither beginning nor end, because it is an infinite substitution of points or a piece or cut part of a thing that is included by the intersection of the set of points of two rays that has a beginning and an end.
In addition, the ray can be called a closed half line where it includes the point of origin, and it can do one thing where it has more length, extension or volume than a line or a body considering its extension in a straight line towards infinity.
When a bijective activity is considered, it means that it is at the same time, injective where there are different elements that correspond to them, and surjective is when it is applied above all in the participation of that function, that is, each element of '' Y '' is the image of an element "X", and the 0 for its part is the point of dividing line of both rays.
