what is a pentagon
http://www.mathsisfun.com/geometry/pentagon.html
a pentagon is a polygon with 5 sides
A pentagon is a polygon with five sides and five angles. To understand what a pentagon is, you can visualize it by drawing five line segments connected to form a closed figure or by imagining a regular five-sided shape. A regular pentagon has equal side lengths and equal interior angles.
To determine the properties and characteristics of a pentagon, you can refer to basic geometry concepts:
1. Sides: A pentagon has five sides, which are line segments connecting the vertices.
2. Angles: A pentagon has five interior angles formed where the sides meet. In a regular pentagon, all the angles are equal, measuring 108 degrees. In an irregular pentagon, the angles can have different measures.
3. Diagonals: Diagonals are line segments connecting non-adjacent vertices of a polygon. A pentagon has five diagonals.
Remember that a pentagon is just one type of polygon, and polygons can have varied numbers of sides and angles.