hexagon
There are regular polygons (with 3, 4 and 6 sides).There are irregular convex polygons (with 3, 4, 5 or 6 sides). There are [irregular] concave polygons with various numbers of sides.
Hexagons
Regular polygons with 3, 4 or 6 sides.
Quadrilaterals are polygons with four sides. Triangles are polygons with three sides.
Regular polygons with even sides if there are 6 or more of them; selected irregular polygons with seven or more odd numbers of sides.
There are regular polygons (with 3, 4 and 6 sides).There are irregular convex polygons (with 3, 4, 5 or 6 sides). There are [irregular] concave polygons with various numbers of sides.
quadrilaterals only have for sides and polygons have 5-6
Hexagons
Regular polygons with 3, 4 or 6 sides.
Quadrilaterals are polygons with four sides. Triangles are polygons with three sides.
Regular polygons with even sides if there are 6 or more of them; selected irregular polygons with seven or more odd numbers of sides.
For regular polygons: 3, 4, or 6. For irregular polygons, figures with any number of sides can be found.
The hexagon is the only one that has exactly 6.All polygons with 6 or more sides have at least 6 interior angles.
Infinitely many. Polygons with 6 or more sides can have 3 pairs of parallel lines. Polygons with 7 or more sides can have a set of three parallel lines.
Yes
A parallelogram and selected polygons with 6 or more sides.
A parallelogram or a selection of polygons with 6 or more sides.