- half plane
- noun Date: 1891 the part of a plane on one side of an indefinitely extended straight line drawn in the plane

*New Collegiate Dictionary.
2001.*

- half plane
- noun Date: 1891 the part of a plane on one side of an indefinitely extended straight line drawn in the plane

*New Collegiate Dictionary.
2001.*

**half-plane**— /haf playn , hahf /, n. Math. the part of the plane on one side of a straight line of infinite length in the plane. [1890 95] * * * half plane «HAF PLAYN, HAHF », noun. Geometry. the part of a plane on one side of a straight line drawn in the… … Useful english dictionary**half-plane**— /haf playn , hahf /, n. Math. the part of the plane on one side of a straight line of infinite length in the plane. [1890 95] * * * … Universalium**half plane**— noun mathematics : the part of a plane on one side of an indefinitely extended straight line drawn in it … Useful english dictionary**Poincaré half-plane model**— Stellated regular heptagonal tiling of the model.In non Euclidean geometry, the Poincaré half plane model is the upper half plane, together with a metric, the Poincaré metric, that makes it a model of two dimensional hyperbolic geometry.It is… … Wikipedia**Upper half-plane**— In mathematics, the upper half plane H is the set of complex numbers with positive imaginary part y: The term is associated with a common visualization of complex numbers with points in the plane endowed with Cartesian coordinates, with the Y… … Wikipedia**Lower half-plane**— In mathematics, the lower half plane H is the set of complex numbers :mathbb{H} = {x + iy ;| y < 0; x, y in mathbb{R} } with positive imaginary part y . Other names are hyperbolic plane, Poincaré plane and Lobachevsky plane, particularly in texts … Wikipedia**Right half-plane**— In complex variables, the right half plane is the set: {z in mathbb{C} quad : quad mbox{Re}(z) > 0}of all points in the complex plane whose real part is positive … Wikipedia**Half-space (disambiguation)**— half space may refer to either of the following: * in geometry , the half space (or half plane) mdash;part of an affine space * in typography , the half space punctuation character … Wikipedia**Half-space**— For other uses, see Half space (disambiguation). In geometry, a half space is either of the two parts into which a plane divides the three dimensional euclidean space. More generally, a half space is either of the two parts into which a… … Wikipedia**Plane (geometry)**— Two intersecting planes in three dimensional space In mathematics, a plane is a flat, two dimensional surface. A plane is the two dimensional analogue of a point (zero dimensions), a line (one dimension) and a space (three dimensions). Planes can … Wikipedia