square
square
Yes, but not a polygon (or polyhedron).Consider a quadrilateral with one diagonal. The end points of the diagonal are at odd vertices while the other two are even.
A polygon is any geometric 2-D shape. A Quadrilateral is a polygon with four sides.
No vertices (0). a heart shape is not a polygon shape, only polygon shapes have vertices.
Well, honey, a polygon can have any number of vertices, but it must have at least three. So, grab a pen and start counting those corners, because the more vertices you have, the fancier your polygon will be. Just don't go crazy and try to draw a polygon with zero vertices - that's just a sad, lonely dot.
no
quadrilateral
No. A quadrilateral is a 2-dimensional shape with 4 edges, 1 face and 4 vertices.
Correct on both counts
Correct on both counts
Yes, 2-dimensional shapes have vertices, which are the points where two or more edges meet. For example, a triangle has three vertices, while a square has four. The number of vertices varies depending on the type of polygon; for instance, a pentagon has five vertices.
A line connecting to non-adjacent vertices of a polygon is called a diagonal of the polygon. A triangle has no diagonals since each vertex is adjacent to the next. A quadrilateral has two diagonals.