| A stack of collinear antenna can be built by placing Collinears aside one another, in the sense of the main axis. |
| As given earlier, the three relevant intersection points for six points on the circle will be collinear. |
| Exact alignment occurs when these three points are collinear in the frontal plane. |
| The collinear centres are the three sets of one external and two internal centres, and the three external centres. |
| If all points are collinear, it has zero area and is represented by a segment. |
| If four of the points are collinear, or two of the points coincide, no conic is created. |
