38 relations: Angle, Apothem, Area, Azimuth, Bend radius, Cartesian coordinate system, Centre (geometry), Circle, Circumference, Circumscribed circle, Circumscribed sphere, Collinearity, Coordinate system, Diameter, Dimension, Distance, Distance (graph theory), Filling radius, Geometry, Glossary of Riemannian and metric geometry, Graph theory, Hypercube, Incircle and excircles of a triangle, Latin, Law of sines, Line (geometry), Line segment, Perimeter, Plane (geometry), Point (geometry), Radius of convergence, Radius of curvature, Radius of gyration, Regular polygon, Semidiameter, Sphere, Two-dimensional space, Variable (mathematics).
Angle
In plane geometry, an angle is the figure formed by two rays, called the sides of the angle, sharing a common endpoint, called the vertex of the angle.
New!!: Radius and Angle · See more »
Apothem
The apothem (sometimes abbreviated as apo) of a regular polygon is a line segment from the center to the midpoint of one of its sides.
New!!: Radius and Apothem · See more »
Area
Area is the quantity that expresses the extent of a two-dimensional figure or shape, or planar lamina, in the plane.
New!!: Radius and Area · See more »
Azimuth
An azimuth (from the pl. form of the Arabic noun "السَّمْت" as-samt, meaning "the direction") is an angular measurement in a spherical coordinate system.
New!!: Radius and Azimuth · See more »
Bend radius
Bend radius, which is measured to the inside curvature, is the minimum radius one can bend a pipe, tube, sheet, cable or hose without kinking it, damaging it, or shortening its life.
New!!: Radius and Bend radius · See more »
Cartesian coordinate system
A Cartesian coordinate system is a coordinate system that specifies each point uniquely in a plane by a pair of numerical coordinates, which are the signed distances to the point from two fixed perpendicular directed lines, measured in the same unit of length.
New!!: Radius and Cartesian coordinate system · See more »
Centre (geometry)
In geometry, a centre (or center) (from Greek κέντρον) of an object is a point in some sense in the middle of the object.
New!!: Radius and Centre (geometry) · See more »
Circle
A circle is a simple closed shape.
New!!: Radius and Circle · See more »
Circumference
In geometry, the circumference (from Latin circumferentia, meaning "carrying around") of a circle is the (linear) distance around it.
New!!: Radius and Circumference · See more »
Circumscribed circle
In geometry, the circumscribed circle or circumcircle of a polygon is a circle which passes through all the vertices of the polygon.
New!!: Radius and Circumscribed circle · See more »
Circumscribed sphere
In geometry, a circumscribed sphere of a polyhedron is a sphere that contains the polyhedron and touches each of the polyhedron's vertices.
New!!: Radius and Circumscribed sphere · See more »
Collinearity
In geometry, collinearity of a set of points is the property of their lying on a single line.
New!!: Radius and Collinearity · See more »
Coordinate system
In geometry, a coordinate system is a system which uses one or more numbers, or coordinates, to uniquely determine the position of the points or other geometric elements on a manifold such as Euclidean space.
New!!: Radius and Coordinate system · See more »
Diameter
In geometry, a diameter of a circle is any straight line segment that passes through the center of the circle and whose endpoints lie on the circle.
New!!: Radius and Diameter · See more »
Dimension
In physics and mathematics, the dimension of a mathematical space (or object) is informally defined as the minimum number of coordinates needed to specify any point within it.
New!!: Radius and Dimension · See more »
Distance
Distance is a numerical measurement of how far apart objects are.
New!!: Radius and Distance · See more »
Distance (graph theory)
In the mathematical field of graph theory, the distance between two vertices in a graph is the number of edges in a shortest path (also called a graph geodesic) connecting them.
New!!: Radius and Distance (graph theory) · See more »
Filling radius
In Riemannian geometry, the filling radius of a Riemannian manifold X is a metric invariant of X. It was originally introduced in 1983 by Mikhail Gromov, who used it to prove his systolic inequality for essential manifolds, vastly generalizing Loewner's torus inequality and Pu's inequality for the real projective plane, and creating systolic geometry in its modern form.
New!!: Radius and Filling radius · See more »
Geometry
Geometry (from the 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.
New!!: Radius and Geometry · See more »
Glossary of Riemannian and metric geometry
This is a glossary of some terms used in Riemannian geometry and metric geometry — it doesn't cover the terminology of differential topology.
New!!: Radius and Glossary of Riemannian and metric geometry · See more »
Graph theory
In mathematics, graph theory is the study of graphs, which are mathematical structures used to model pairwise relations between objects.
New!!: Radius and Graph theory · See more »
Hypercube
In geometry, a hypercube is an ''n''-dimensional analogue of a square and a cube.
New!!: Radius and Hypercube · See more »
Incircle and excircles of a triangle
In geometry, the incircle or inscribed circle of a triangle is the largest circle contained in the triangle; it touches (is tangent to) the three sides.
New!!: Radius and Incircle and excircles of a triangle · See more »
Latin
Latin (Latin: lingua latīna) is a classical language belonging to the Italic branch of the Indo-European languages.
New!!: Radius and Latin · See more »
Law of sines
In trigonometry, the law of sines, sine law, sine formula, or sine rule is an equation relating the lengths of the sides of a triangle (any shape) to the sines of its angles.
New!!: Radius and Law of sines · See more »
Line (geometry)
The notion of line or straight line was introduced by ancient mathematicians to represent straight objects (i.e., having no curvature) with negligible width and depth.
New!!: Radius and Line (geometry) · See more »
Line segment
In geometry, a line segment is a part of a line that is bounded by two distinct end points, and contains every point on the line between its endpoints.
New!!: Radius and Line segment · See more »
Perimeter
A perimeter is a path that surrounds a two-dimensional shape.
New!!: Radius and Perimeter · See more »
Plane (geometry)
In mathematics, a plane is a flat, two-dimensional surface that extends infinitely far.
New!!: Radius and Plane (geometry) · See more »
Point (geometry)
In modern mathematics, a point refers usually to an element of some set called a space.
New!!: Radius and Point (geometry) · See more »
Radius of convergence
In mathematics, the radius of convergence of a power series is the radius of the largest disk in which the series converges.
New!!: Radius and Radius of convergence · See more »
Radius of curvature
In differential geometry, the radius of curvature,, is the reciprocal of the curvature.
New!!: Radius and Radius of curvature · See more »
Radius of gyration
Radius of gyration or gyradius of a body about an axis of rotation is defined as the radial distance of a point from the axis of rotation at which, if whole mass of the body is assumed to be concentrated, its moment of inertia about the given axis would be the same as with its actual distribution of mass.
New!!: Radius and Radius of gyration · See more »
Regular polygon
In Euclidean geometry, a regular polygon is a polygon that is equiangular (all angles are equal in measure) and equilateral (all sides have the same length).
New!!: Radius and Regular polygon · See more »
Semidiameter
In geometry, the semidiameter or semi-diameter of a set of points may be one half of its diameter; or, sometimes, one half of its extent along a particular direction.
New!!: Radius and Semidiameter · See more »
Sphere
A sphere (from Greek σφαῖρα — sphaira, "globe, ball") is a perfectly round geometrical object in three-dimensional space that is the surface of a completely round ball (viz., analogous to the circular objects in two dimensions, where a "circle" circumscribes its "disk").
New!!: Radius and Sphere · See more »
Two-dimensional space
Two-dimensional space or bi-dimensional space is a geometric setting in which two values (called parameters) are required to determine the position of an element (i.e., point).
New!!: Radius and Two-dimensional space · See more »
Variable (mathematics)
In elementary mathematics, a variable is a symbol, commonly an alphabetic character, that represents a number, called the value of the variable, which is either arbitrary, not fully specified, or unknown.
New!!: Radius and Variable (mathematics) · See more »
Redirects here:
Curve radii, Radii, Radius (geometry).
References
[1] https://en.wikipedia.org/wiki/Radius