ProphetesAI is thinking...
isogonic
Answers
MindMap
Loading...
Sources
isogonic
▪ I. isogonic, a.1 (n.) Phys. Geog. (aɪsəʊˈgɒnɪk) [f. as prec. + -ic.] Indicating equal angles (of magnetic variation); applied to lines on a map, etc. connecting points of the earth's surface where the magnetic declination, or variation from the true north, is the same; or to a map, etc. exhibiting...
Oxford English Dictionary
prophetes.ai
Isogonal
:
Isogonal figure or polygon, polyhedron, polytope or tiling
Isogonal trajectory, in curve theory
Isogonal conjugate, in triangle geometry
See also
Isogonic
wikipedia.org
en.wikipedia.org
isogonal
isogonal, a. (n.) (aɪˈsɒgənal) [f. as prec. + -al1: cf. hexagonal, etc.] 1. = isogonic a.1 and n.1857 Whewell Hist. Induct. Sc. (ed. 3) III. 52 The values of these elements at any given time..can be expressed by charts of the earth's surface, on which are drawn the isodynamic, isogonal, and isoclina...
Oxford English Dictionary
prophetes.ai
Symmedian
Symmedian and 2 Antiparallels at cut-the-knot
Symmedian and the Tangents at cut-the-knot
An interactive Java applet for the symmedian point
Isogons and Isogonic
wikipedia.org
en.wikipedia.org
isogon
isogon Geom. rare—0. (ˈaɪsəgɒn) In 7–8 erron. isagon. [f. Gr. ἰσογώνι-ος equi-angular.] A figure having equal angles.1696 Phillips (ed. 5), Isagon. So 1700 in Moxon Math. Dict.; 1721 in Bailey. ______________________________ Restrict Geom. rare—0 to sense in Dict. and add: 2. [ad. G. Isogone (J. W. ...
Oxford English Dictionary
prophetes.ai
Project Magnet (USN)
Special world charts were published with isometric lines for magnetic variation (isogonic chart) and magnetic dip (isoclinic chart).
wikipedia.org
en.wikipedia.org
isometric
isometric, a. and n. (aɪsəʊˈmɛtrɪk) [f. Gr. ἰσοµετρία equality of measure (f. ἴσο-ς + µέτρος) + -ic: in mod.F. isométrique.] A. adj. 1. Of equal measure or dimensions.1855 Mayne Expos. Lex., Isometric,..of equal measure, or extent. 1879 G. B. Prescott Sp. Telephone 547 If an isometric block of metal...
Oxford English Dictionary
prophetes.ai
Kiepert conics
The center is the midpoint of the line segment joining the isogonic centers of triangle which are the triangle centers X(13) and X(14) in the Encyclopedia
wikipedia.org
en.wikipedia.org
isometry
isometry (aɪˈsɒmɪtrɪ) [ad. Gr. ἰσοµετρία equality of measure (f. µέτρος measure): see -y3.] 1. Math. A one-to-one transformation of one metric space into another that preserves the distances or metrics between each pair of points.1941 Birkhoff & MacLane Survey Mod. Algebra vi. 128 An obvious example...
Oxford English Dictionary
prophetes.ai
Magnetic declination
Isogonic lines are lines on the Earth's surface along which the declination has the same constant value, and lines along which the declination is zero Isogonic lines are also shown on aeronautical and nautical charts.
wikipedia.org
en.wikipedia.org
Is the Torricelli/Fermat point unique? In a triangle with all angles less than 120 degrees can there be two such points? I am wondering because in the geometry game _Euclidea_ it gives two "v-stars" for this problem ...
Fermat–Torricelli point, i.e. the point such that the total distance from the three vertices of the triangle to the point is the minimum possible
There are two isogonic When one of original angles is greater $120^\circ$ then that vertex is the Fermat–Torricelli point while both isogonic centres are outside the original
prophetes.ai
Fermat point
This point is commonly called the first isogonic center. Carry out the same exercise with as you did with , and find the point . Trilinear coordinates for the first isogonic center, X(13):
Trilinear coordinates for the second isogonic center, X(14):
Trilinear coordinates for
wikipedia.org
en.wikipedia.org
Triangle center
Hence the 1st isogonic center is also a triangle center. Binary systems
There are other center pairs besides the Fermat point and the 1st isogonic center.
wikipedia.org
en.wikipedia.org
1701 in science
General Chart of the Variation of the Compass is first published, the first to show magnetic declination (in the Atlantic Ocean) and the first on which isogonic
wikipedia.org
en.wikipedia.org
Neuberg cubic
perpendicular bisector of with ; and are defined similarly
The six vertices of the equilateral triangles constructed on the sides of triangle
The two isogonic
wikipedia.org
en.wikipedia.org