A pair of mathematicians solved a legendary question about the proportion of vertices in a graph with an odd number of connections. “It’s a bit of a surprise, at least for me, that such a combination ...

2D shapes have sides and corners (also called vertices). Here are some 2D shapes you might know. Why not see how much you know about this topic already? Then work through the page and see if you ...

Then the judge writes 12 under edges, and the corners of the cube are highlighted next and 8 recorded under vertices. NARRATOR: Edges - that's twelve. Right, what about corners, or vertices - that ...