What is diagnol

Diagonal A diagonal is a line segment that links two vertices of a polygon that are not adjacent. In a polygon with n sides (an "n-gon") the number of diagonals is n ( n − 3 ) 2 Pages referring to 'diagonal' Diagonals of a rectangle Definiton and properties of the diagonals of a rectangle Diagonals of a square Definiton and properties of the diagonals of a square Parallelogram and its properties. (Coordinate Geometry) Definiton and properties of a parallelogram (coordinate geometry) Parallelogram diagonals bisect each other The diagonals of a parallelogram bisect each other. Polygon diagonals Definition of the diagonals of a polygon, including a formula to calculate the number of them in an n-gon Rectangle and its properties. (Coordinate Geometry) Definiton and properties of a rectangle (coordinate geometry) Rhombus diagonals bisect each other at right angles The diagonals of a rhombus bisect each other at right angles. Square and its properties. (Coordinate Geometry) Definiton and properties of a square (coordinate geometry) Its a long but I think it's a easy and understoodable answer?