# data[].attributes.headline
A polygon is a closed figure made up of line segments in a two-dimensional plane.

# data[].attributes.subject
A polygon is a closed figure made up of line segments in a two-dimensional plane.

# data[].attributes.body
A regular polygon has all sides of equal length and all angles of equal measure.

# data[].attributes.body
Irregular polygon has sides and angles of any length and size.

# data[].attributes.body
A convex polygon is a polygon that has all its interior angles less than 180°.

The vertices of a convex polygon always point outwards.

A convex polygon can be both regular and irregular.

# data[].attributes.body
A concave polygon, also known as a non-convex polygon, has at least one of its interior angles measuring more than 180°.

All concave polygons are irregular since all the interior angles are of different measures. Thus, concave polygons are never regular.

# data[].attributes.body
Polygons are classified into different types, namely:

Regular Polygon

Irregular Polygon

Convex Polygon

Concave polygon