The interior angles are formed between the adjacent sides inside the polygon and are equal to each other in the case of a regular polygon. All the exterior angles are equal (represented by yellow color in the figure)Īs we learned above, there are two kinds of angles that can be found in the case of a regular polygon.All the interior angles are equal (represented by blue color in the figure).In simple words, a regular polygon has all angles of the same measure at each vertex and all sides of the same length while a polygon that does not have sides of the same length and measurement of angles at each vertex different is referred to as an irregular polygon.Ĭonsidering the below figure of a regular hexagon, let us discuss the parts of a regular polygon: Regular polygons are convex i.e., all the interior angles measure less than 180º.
A regular polygon is always prefixed by the term "regular". It is said that as per Euclidean Geometry, a polygon that is equiangular and equilateral is called a regular polygon while a polygon whose sides are not equiangular and equilateral is referred to as an irregular polygon. The difference between regular and irregular polygon is given as: Criterion of Difference As the name suggests "regular" in regular polygon literally means a definite pattern that appears in the regular polygon while on the other hand "irregular" in irregular polygon means there is an irregularity that appears in a polygon.
For example, the trigon, also known as the triangle is made of two words "tri" which means three, and gon mean angles which refers that it is a shape having three angles.ĭifference Between Regular and Irregular PolygonĪ polygon can be categorized as regular and irregular polygon based on the length of its sides. Each polygon is given a special name on the basis of its number of sides, such a way that when the name of the polygon is written its one part is also influenced by the number of its sides. This chart shows the naming convention of polygons on the basis of the number of their sides. In order to understand polygons and their naming convention see the chart given below.
It is a plane shape, that is, the shape is made of line segments or straight lines.It is a closed shape, that is, there is no end that is left open in the shape.We can identify a polygon by checking the following characteristics in a shape:
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