Concyclic什麼意思

"Concyclic" is a term used in geometry that refers to points or figures that can be placed on a single circle without any of them crossing each other. In other words, the points or figures are "on the same circle." The word comes from the Latin prefix "con-," meaning "together," and the word "cycle," which refers to a circle.

For example, if you have four points on a plane, and you can draw a circle that passes through all four points without any of the points being inside the circle, then those four points are said to be concyclic. The term is often used in discussions of triangles, where it might be noted that the three vertices of a triangle are concyclic (i.e., they can all be on the same circle).