# Mathematics

Algebra, from the Arabic al-jebr, meaning “reunion of broken parts”, is one of the wide-ranging parts of mathematics, combined with number theory, geometry, and analysis.

Geometry is a branch of mathematics that is concerned with questions of shape, size, relative position of figures, and the properties of space.

Trigonometry, from the Greek trigonon, meaning triangle, and metron, meaning measure, is a branch of mathematics that studies the relationships involving lengths and angles of triangles.

Applied mathematics is a branch of mathematics that focuses on mathematical methods that are usually used in science, engineering, business, and industry.

In mathematics and computer science, an algorithm is a step-by-step procedure for calculations. Algorithms are used for calculations, automated reasoning, and data processing.

In geometry, a polygon is traditionally a plane figure that is bounded by a finite chain of strait line segments closing in a loop to create a closed chain or circuit.

In Euclidean geometry, a rhombus, plural rhombi or rhombuses, is a simple quadrilateral whose four sides all have equal length.