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Angle

In geometry, an angle is formed by two lines that meet at a point. Each line is called a side of the angle, and the point they share is called the vertex of the angle. The term angle is used to denote both geometric figures and their size or magnitude as associated quantity. Angular measure or measure of angle are sometimes used to distinguish between…

History, Geography & Measurement

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Angles in geography and astronomy

GeographyGeographic coordinate systemLatitudeLongitudeEquator
25 related topics

Types

Right angleNormalOrthogonalPerpendicularHatch marks
30 related topics

Measuring angles

ProtractorGradiansArcSubtendUnit of measurement
29 related topics

Dot product and generalisations

Euclidean spaceEuclidean vectorsDot productNormal vectorsSkew lines
21 related topics

Topics to explore

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Overview

Fundamentals

Types

Measuring angles

Bisecting and trisecting angles

Dot product and generalisations

History and etymology

Angles in geography and astronomy

Advanced semantic analysis

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Map overview Semantic statistics

Angle

Nodes152
Edges151
Triples151
Avg. degree1.99
Density0.013158
Components1

How this topic connects Entity context

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Angle

Top relations

measured by · 17
Angle → AB, AC, An, Angles, Angular, BAC, Degrees, For, Greek, In, Measuring, Radians, Roman, The, These, This, With
related to Polygon-related angles · 12
Angle → An, Even, Exterior, If, In, In Euclidean, Logo Turtle, Some, Still, The, There, This
related to history · 10
Angle → Angles, Both, Cognate, English, Greek, Latin, Pedagogically, Philosophers, Proto-Indo-European, The
related to Vertical angle theorem · 10
Angle → According, All, Egypt, Egyptians, Equals, Eudemus, Miletus, Rhodes, Thales, The
related to Dimensional analysis · 9
Angle → For, However, In, International System, Quantities, Some, Therefore, This, Units
related to Hyperbolic angle · 8
Angle → Analysis, Infinite, Introduction, Leonhard Euler, The, This, Unlike, When
related to Signed angles · 7
Angle → An, BAC, Cartesian, In, It, The, When Cartesian
related to Addition and subtraction · 6
Angle → BAC, BAD, DAC, Subtraction, The, This
related to Angles in geography and astronomy · 6
Angle → Astronomers, Earth, Greenwich, In, The, This
related to Equivalent angles · 6
Angle → An, Angles, For, Procedurally, The, Two

Important terminology Word statistics

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Important terminology

angles two measure called turn equal right angular defined used one lines vertex exterior interior displaystyle 180 measurement radians straight

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
Angleis afigure consisting of two rays which lie in a plane and share a common endpoint0.90text
Angleis asum of the measures of the two angles0.90text
Angleis areflex angle0.90text
Angleis aargument of a hyperbolic function just as the circular angle is the argument of a circular function0.90text
the straight angle or half the full angle was attributed the value of 180.Additioninstance ofapproximately 6.28 rad.Historically the degree unit was chosen0.80text
subtractionThe angle addition postulate states that if D is a point lying in the interior ofinstance ofapproximately 6.28 rad.Historically the degree unit was chosen0.80text
the straight angle or half the full angle was attributed the value of 180instance ofapproximately 6.28 rad.Historically the degree unit was chosen0.80text
a protractorinstance ofMeasuring anglesAngle measurement encompasses both direct physical measurement using a measuring instrument0.80text
as well as the theoretical calculation of angle size from other known quantitiesinstance ofMeasuring anglesAngle measurement encompasses both direct physical measurement using a measuring instrument0.80text
lengthinstance ofor the length of the arc that subtends the angle at the centre of a unit circle.The measurement of angles is inherently different from the measurement of other physical quantities0.80text
altitude angle or elevation with respect to the horizon as well as the azimuth with respect to north.Astronomers also measure objects' apparent size as an angular diameterinstance ofa sighting direction can be specified in terms of a vertical angle0.80text
Anglemeasured byAn0.60section

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