Intersection

For example, in Euclidean geometry, when two lines in a plane are not parallel, their intersection is the point at which they meet.

Unlike the Euclidean definition, this does not presume that the objects under consideration lie in a common space.

It simply means the overlapping area of two or more objects or geometries.

An intersection can have various geometric shapes, but a point is the most common in a plane geometry.

There can be more than one primitive object, such as points (pictured above), that form an intersection.

From there, it was used by Giuseppe Peano (1858–1932) for intersection, in 1888 in Calcolo geometrico secondo l'Ausdehnungslehre di H.

[2][3] Peano also created the large symbols for general intersection and union of more than two classes in his 1908 book Formulario mathematico.

The intersection (red) of two disks (white and red with black boundaries).
The circle (black) intersects the line (purple) in two points (red). The disk (yellow) intersects the line in the line segment between the two red points.
The intersection of D and E is shown in grayish purple. The intersection of A with any of B, C, D, or E is the empty set .
Considering a road to correspond to the set of all its locations, a road intersection (cyan) of two roads (green, blue) corresponds to the intersection of their sets.
The red dot represents the point at which the two lines intersect.