coplanar lines
lines in the same plane
Lines are said to be coplanar if they all lie on the same plane. Simply put, if multiple lines can all fit onto a flat, two-dimensional surface without crossing each other, then they are considered coplanar.
For example, imagine laying two pieces of string on a table. If the strings are lying flat on the table and do not cross each other, then they are coplanar. However, if one of the strings is lifted up off the table, then it is no longer considered coplanar with the other string because it no longer lies on the same plane.
It is important to note that coplanar lines are an essential concept in many fields, including geometry and physics. In geometry, the properties of coplanar lines are used to solve problems related to angles, distances, and geometric shapes. In physics, coplanar vectors are used to calculate the motion of objects on the same plane.
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