Archive for: November 2007

Algebra is a branch of mathematics concerning the study of structure, relation and quantity. Together with geometry, analysis, combinatorics, and number theory, algebra is one of the main branches …

The area between two concentric circles.

Annual is typically used to describe something that happens once a year. Circannual describes events that take place over the course of one year and repeat year after year.

Adjacent is an adjective meaning contiguous, adjoining or abutting.
In geometry, adjacent sides of a polygon meet at a vertex and adjacent vertices of a polygon are joined by a side.
In trigonometry the adjacent side of a right angled triangle is …

Addition is the mathematical operation of combining or adding two numbers to obtain an equal simple amount or total. Addition also provides a model for related processes such as joining two collections …

Two or more numbers which are added. 

Example  

      4    +          …