The plural of vertex is vertices. The number of sides and vertices are the properties of a shape. Let’s look at the number of sides and vertices that some 2D shapes have. Here is a triangle.

Water molecules are so attracted to each other that even after the balloon pops, the water molecules stay together keeping the shape of the balloon. The circles in this drawing represent water ...

So there has been considerable debate among paleobiologists about megalodon's size, body shape, and swimming speed ... In 2020, the team reconstructed a 2D model of the megalodon, basing the ...