I am 64 and missed schooling because of childhood hospitalisation. I'm embarrassed about how little I know of maths and have been reading thru the about.math site. A Kindergarten! geometry question is 'I have four sides and four vertices - what am I?' I'd not known the term vertex/vertices. When I looked it up the examples referred to solids, with faces, edges and vertices. Not 'sides'. I'm assuming that a kindergarten level is probably asking for 'a square'. But, if that is so, why not use the word 'angle'? Many thanks. Margarita.