The one-dimensional line composed of infinite points that occur in the same direction is called straight . Concurrent , on the other hand, is an adjective that refers to what concurs (that is, that meets with others of its kind in the same place).
These definitions allow us to approach the notion of concurrent straight . The concurrent lines are three or more straight that are in the same plane and that have a point in common .
This means that the concurrent lines go through the same point , unlike the parallel lines that do not have points in common, are equidistant from each other and do not have the possibility of crossing even when they last indefinitely. Both properties are therefore exclusive: if the lines are parallel, they are not concurrent, and vice versa.
It can be said, in short, that the concurrent lines concur at the same point. If it's two lines, we talk about drying lines or of Perpendicular straight lines , as the case may be. On the other hand, having three or more lines that intersect at a certain point, the appropriate concept is that of concurrent lines. Anyway, all the lines that cross the same point are concurrent in the sense that they concur in a certain space (the point in question).
In schools and institutes students have to learn the concept of concurrent straight and also how to shape it. Thus, in the first case that is something they discover in the Geometry classes, while the second is acquired in the Plastic classes.
It should be noted that the existence of concurrent lines implies the creation of different angles . When crossing at the concurrent point, the lines give rise to angles with different measurements (45º, 20º, etc.).
In addition to all of the above, we cannot ignore the existence of what is called the concurrent line to the Earth line, which is used primarily within the architecture sector and which refers to the line that participates in certain projections and that adopts a concurrent position against essential lines.
And they also gain special prominence within the aforementioned sector. Thus, for example, we could determine that there are certain buildings and structures that clearly make it clear that they are composed of what are concurrent straight. This would be the case of the pyramids of Egypt, since all its lateral lines come to converge in a common point that is the one that forms the cusp.
It is considered, in the same way, that in the art world this type of lines also take on special prominence. Thus, for example, it is established that Renaissance painters used them with a lot of presence when it came to capturing landscapes and, specifically, streets. Specifically, it is determined that to undertake the layout of that element they chose to create two concurrent lines that joined in what was called the vanishing point or infinity point. This is something that can be seen in some paintings by Rafael, Durero or Piero de la Francesca.