Polygon
A closed shape formed by line segments
A polygon is a 2-dimensional geometric shape that is defined as a closed plane figure with three or more straight sides and angles, typically joined to form a closed shape. Polygons can have any number of sides, but common examples include squares, rectangles, triangles, pentagons, hexagons, heptagons, octagons, and nonagons.
The sides of a polygon are straight lines that intersect at their endpoints to form angles. The angles of a polygon can be classified as either interior or exterior angles. Interior angles are those that are inside the polygon, while exterior angles are those that are outside the polygon.
Polygons can be classified further based on the number of sides they have. For example, a triangle is a polygon with three sides, while a quadrilateral is a polygon with four sides. Polygons with five or more sides are generally referred to by their specific names, such as pentagon, hexagon, and so on.
In geometry, polygons play an important role in many different mathematical applications. They are used to calculate area and perimeter of shapes, as well as to solve complex geometric problems. The study of polygons is important for geometry and mathematical theory, and it has many practical applications in engineering, architecture, and computer graphics.
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