Diagonals

In parallelograms, diagonals always bisect each other

Rectangles always have two congruent diagonals

In rhombi, the diagonals are always perpendicular

Find a rhombus' area using its diagonals

A rhombus is a quadrilateral whose four sides all have the same length. Another name is equilateral quadrilateral, since equilateral means that all of its sides are equal in length. The rhombus is often called a diamond, after the diamonds suit in playing cards, or a lozenge, though the latter sometimes refers specifically to a rhombus with a 45° angle.

A rhombus is a quadrilateral with all four sides equal in length.

This lesson will look at an example of Diagonals of a Parallelogram and will go through examples.