4 each.
A quadrilateral has 4 sides
A triangle has three sides and three vertices.
6 sides and vertices
4 sides 4 vertices
3 vertices and 3 sides.
8 sides 8 vertices
Six sides and six vertices.
4 sides and 4 vertices
6 sides and 8 vertices
3 sides and 3 vertices
4 vertices and 6 sides
An octagon has 8 vertices and 8 sides