Geometry Symbols
This page lists all the various symbols in the Geometry Symbols category.
Geometry (Ancient Greek: γεωμετρία; geo- "earth", -metron "measurement") is a branch of mathematics concerned with questions of shape, size, relative position of figures, and the properties of space. A mathematician who works in the field of geometry is called a geometer. Geometry arose independently in a number of early cultures as a body of practical knowledge concerning lengths, areas, and volumes, with elements of a formal mathematical science emerging in the West as early as Thales (6th Century BC). By the 3rd century BC geometry was put into an axiomatic form by Euclid, whose treatment—Euclidean geometry—set a standard for many centuries to follow. Archimedes developed ingenious techniques for calculating areas and volumes, in many ways anticipating modern integral calculus. The field of astronomy, especially mapping the positions of the stars and planets on the celestial sphere and describing the relationship between movements of celestial bodies, served as an important source of geometric problems during the next one and a half millennia. Both geometry and astronomy were considered in the classical world to be part of the Quadrivium, a subset of the seven liberal arts considered essential for a free citizen to master.
Symbols in this category:
Circle
A circle is a simple shape of Euclidean geometry that is the set of all points in a plane that are at a given distance from a given point, the centre. The distance between any of the points and the centre is called the radius. It can also be defined as the locus of a point equidistant from a fixed point.
Enneagram
In geometry, an enneagram is a nine-pointed plane figure. It is sometimes called a nonagram.
The Enneagram of Personality, or simply the Enneagram (from the Greek words ἐννέα [ennéa, meaning "nine"] and γράμμα [grámma, meaning something "written" or "drawn"), is a model of the human psyche which is principally understood and taught as a typology of nine interconnected personality types.
Join \ Bowtie
The Join/bowtie is commonly used in logic math and seen as philosophically symbolic.
Octagon
In geometry, an octagon (from the Greek ὀκτάγωνον oktágōnon, "eight angles") is a polygon that has eight sides.
pentagon
In geometry, a pentagon (from pente, which is Greek for the number 5) is any five-sided polygon.
Rectangle
In Euclidean plane geometry, a rectangle is any quadrilateral with four right angles. It can also be defined as an equiangular quadrilateral, since equiangular means that all of its angles are equal (360°/4 = 90°). It can also be defined as a parallelogram containing a right angle. A rectangle with four sides of equal length is a square. The term oblong is occasionally used to refer to a non-square rectangle.
Rhombus
In Euclidean geometry, a rhombus (◊), plural rhombi or rhombuses, is a simple (non-self-intersecting) 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 former sometimes refers specifically to a rhombus with a 60° angle (see Polyiamond), and the latter sometimes refers specifically to a rhombus with a 45° angle.
Sagittarius
Sagittarius (Greek: Τοξότης, "Toxotes", Latin: "Sagittarius") is the ninth astrological sign, which is associated with the constellation Sagittarius. It spans the 240-270th degree of the zodiac, between 234.75 and 270 degree of celestial longitude, which the Sun transits on average between November 23 to December 20 each year.
Square
In geometry, a square is a regular quadrilateral. This means that it has four equal sides and four equal angles (90-degree angles, or right angles). It can also be defined as a rectangle in which two adjacent sides have equal length.
Star
A star is an ideograph whose outer edge forms a symmetrical polygon (usually rotationally so, but if not, bilaterally) whose vertices alternate between joining outward- and inward-pointing pairs of edges.
Triangle
A triangle is one of the basic shapes in geometry: a polygon with three corners or vertices and three sides or edges which are line segments.
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"Geometry Symbols." Symbols.com. STANDS4 LLC, 2024. Web. 19 Apr. 2024. <https://www.symbols.com/category/51/Geometry+Symbols>.
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