Cách sử dụng
The word 'concentric' is used to describe circles or objects that share the same center point. For example, imagine a bullseye target or a set of rings that fit inside each other like a target or bullseye. The circles or rings all share a center point, making them concentric. You might also hear the term used when talking about gears or wheels that are layered on top of each other, all sharing the same center point.