point
fundamental object of geometry: locus within which we can distinguish no other locus than itself
vertex
special kind of point that describes the corners or intersections of geometric shapes
vertex
point of extreme curvature on a curve
triangle center
in triangle geometry a point in the plane that is in some sense a center of a triangle, akin to the centers of squares and circles
instant center of rotation
In Fig. P is the point of rotation
point in time
position of a particular instant in time
focus
point where parallel light rays or light rays originating from a point will converge
centroid
mean ("average") position of all the points in the shape; mean position of all the points in all of the coordinate directions; point at which a cutout of the shape could be perfectly balanced on the tip of a pin
point at infinity
limiting point in some geometric spaces
midpoint
middle point of a line segment
Punta Pesce Spada
southernmost point in Italy
pixel
physical point in a raster image
center of population
in demography, the geographical point that describes the centerpoint of a specific area's population
isolated point
point of a subset S where there exists a neighborhood around it that does not contain any other points of S
geometric median
point minimizing the distance to other points
coordinate origin
point in a Euclidean space used as a reference for geometric measurements of surrounding space
inflection point
point on a continuously differentiable plane curve at which the curve crosses its tangent, that is, the curve changes from being concave to convex, or vice versa
Lebesgue point
type of point where a function does not oscillate too much, roughly
operating point
important point on a schematic diagram of a technical device
Archimedean point
point in space assumed to be completely fixed relative to space
solar apex
apparent direction of motion of the sun
extreme point
mathematical concept
umbilical point
locally spherical point on a mathematical surface
landmark point
distinguished points within shapes
homothetic center
point from which at least two geometrically similar figures can be seen as a dilation/contraction of one another
homothetic center
point from which at least two geometrically similar figures can be seen as a dilation/contraction of one another
focus
fixed reference point; special points with reference to which any of a variety of curves is constructed
periodic point
point that returns to itself after function iteration
antipodal point
point on the surface of a circle or n-sphere which is diametrically opposed to a given point
critical point
in calculus, the points of an equation where the derivative is zero
rational point
in algebraic geometry, a point with rational coordinates
interior point
point in the interior of a subset of a topological space
equivalence point
point of equal equivalents of titrant and analyte in the mixture.
mathematical singularity
in general a point at which a given mathematical object is not defined, or a point of an exceptional set where it fails to be well-behaved in some particular way, such as differentiability
branch point
point of interest for complex multi-valued functions
cut-point
point of a connected topological space, without which it becomes disconnected
center
middle point, in some sense, of an object in geometry
radiant
the point from which meteors appear to originate
phase center
apparent center of radio emission from an antenna
stationary point
point on a graph where all derivatives or partial derivatives are zero
acupuncture point
acupuncture focus locations on the body
pedal point
special point in a triangle
limit
a predefined threshold used to make a distinction
vanishing point
aspect of perspective drawing