A 2D shape is symmetrical if you can draw a line through the middle of it and either side is a reflection of the other. There is a very famous example of symmetry in nature - the butterfly.

And it's so good to be in all this nature ... types of symmetry, but we're going to talk about reflective symmetry. If you draw a line down something and the two sides are a reflection of each ...

One of the notable advancements in symmetry detection is the introduction of shape signature-based methods for reflection symmetry ... to existing techniques[2]. In the realm of rotational ...