geometry 音标拼音: [dʒi'ɑmətri]
n . 几何,几何形状,几何学
几何,几何形状,几何学
geometry 几何
geometry n 1 :
the pure mathematics of points and lines and curves and surfaces Geometry \
Ge *
om "
e *
try \,
n .;
pl . {
Geometries }[
F .
g ['
e ]
om ['
e ]
trie ,
L .
geometria ,
fr .
Gr . ?,
fr . ?
to measure land ;
ge `
a ,
gh ^,
the earth ?
to measure .
So called because one of its earliest and most important applications was to the measurement of the earth '
s surface .
See {
Geometer }.]
1 .
That branch of mathematics which investigates the relations ,
properties ,
and measurement of solids ,
surfaces ,
lines ,
and angles ;
the science which treats of the properties and relations of magnitudes ;
the science of the relations of space .
[
1913 Webster ]
2 .
A treatise on this science .
[
1913 Webster ]
{
Analytical geometry },
or {
Co ["
o ]
rdinate geometry },
that branch of mathematical analysis which has for its object the analytical investigation of the relations and properties of geometrical magnitudes .
{
Descriptive geometry },
that part of geometry which treats of the graphic solution of all problems involving three dimensions .
{
Elementary geometry },
that part of geometry which treats of the simple properties of straight lines ,
circles ,
plane surface ,
solids bounded by plane surfaces ,
the sphere ,
the cylinder ,
and the right cone .
{
Higher geometry },
that pert of geometry which treats of those properties of straight lines ,
circles ,
etc .,
which are less simple in their relations ,
and of curves and surfaces of the second and higher degrees .
[
1913 Webster ]
Mathematics \
Math `
e *
mat "
ics \,
n . [
F .
math ['
e ]
matiques ,
pl .,
L .
mathematica ,
sing .,
Gr . ? (
sc . ?)
science .
See {
Mathematic },
and {-
ics }.]
That science ,
or class of sciences ,
which treats of the exact relations existing between quantities or magnitudes ,
and of the methods by which ,
in accordance with these relations ,
quantities sought are deducible from other quantities known or supposed ;
the science of spatial and quantitative relations .
[
1913 Webster ]
Note :
Mathematics embraces three departments ,
namely :
1 .
{
Arithmetic }.
2 . {
Geometry },
including {
Trigonometry }
and {
Conic Sections }.
3 . {
Analysis },
in which letters are used ,
including {
Algebra }, {
Analytical Geometry },
and {
Calculus }.
Each of these divisions is divided into pure or abstract ,
which considers magnitude or quantity abstractly ,
without relation to matter ;
and mixed or applied ,
which treats of magnitude as subsisting in material bodies ,
and is consequently interwoven with physical considerations .
[
1913 Webster ]
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