Polygons are flat shapes with many sides
All quadrilateral polygons have 4 sides
no polygon simply means many sides
Hexagons are a subcategory of polygons because they are defined as six-sided polygons. Polygons are flat, two-dimensional shapes with straight sides, and they can have any number of sides. Since hexagons meet the criteria of having straight edges and being enclosed, they fit within the broader category of polygons. Thus, all hexagons are polygons, but not all polygons are hexagons.
No, it is not true that in a polygon all sides and angles are congruent. A polygon with all sides congruent is called a regular polygon, but there are also irregular polygons where the sides and angles can vary. For example, a rectangle has congruent opposite sides but not all sides are equal, and its angles are congruent but not all angles need to be equal in other types of polygons. Thus, congruence in sides and angles only applies to regular polygons.
Yes, all triangles are polygons. A polygon is any plane figure bounded only by straight lines. Thus a triangle is a polygon with three sides. Similarly, a quadrilateral is a polygon with four sides, a pentagon is a polygon with five sides, and so on.
two polygons with sides that have all equal sides and angles
No, because some polygons can have more than 4 sides All 4 sided polygons are quadrilaterals
regular polygons are the ones that all sides are equal
Regular polygons have all sides equal in length but an irregular polygon does not have all sides equal.
A regular tessellation can only be formed by regular polygons with 3, 4, or 6 sides. These polygons are the equilateral triangle, square, and regular hexagon. Other polygons, such as pentagons or heptagons, cannot tessellate the plane without leaving gaps or overlaps. Thus, the applicable options for regular polygons in a regular tessellation are 3, 4, and 6 sides.
There are infinitely many polygons so it would be impossible to name them all. For the names of those with a fewer sides see the related link.