FAC

(algebraic geometry) Initialism of Faisceaux Algébriques Cohérents (a landmark paper by Jean-Pierre Serre)


triangle

Borrowed from Latin triangulum. By surface analysis, tri- + angle.

triangle équilatéral

triangle isocèle


cube

Borrowed from Latin cubus, from Ancient Greek κύβος (kúbos).


angle

Inherited from Middle French angle, from Old French angle, from Latin angulus, anglus.

La mesure d’un angle droit est égale à 90 degrés.

The measure of a right angle is equal to 90 degrees.


face

Inherited from Middle French and Old French face, from Late Latin facia, from Latin faciēs (“face, shape”). Doublet of faciès.


volume

volume (amount of space something takes up)


hyperbole

→ Turkish: hiperbol

Borrowed from Latin hyperbole, from Ancient Greek ὑπερβολή (huperbolḗ, “excess, exaggeration”), from ὑπέρ (hupér, “above”) + βάλλω (bállō, “to throw”).


cœur

Antillean Creole: kè

Haitian Creole: kè, kœ

→ Polish: kier

Inherited from Middle French coeur, from Old French cuer, from Vulgar Latin *corem m, from Latin cor n.


rectangle

Borrowed from Medieval Latin or Late Latin rectangulum.

un triangle rectangle

un parallélépipède rectangle

(geometry) right-angled (of a geometric figure)


arc

Inherited from Old French arc, from Latin arcus (“bow, arch”), from Proto-Indo-European *h₂erkʷo-.

(geometry) arc, circular arc, circle segment


plan

→ Central Franconian: Plan

Hunsrik: Plaan

→ German: Plan

→ Norwegian Bokmål: plan

→ Luxembourgish: Plang

→ Ottoman Turkish: پلان
Turkish: plan

→ Polish: plan
→ Kashubian: plan

From earlier plant, derived from the verb planter, or from Latin planus. Doublet of plant or plain, depending on which etymology is right.


sphère

From Late Latin sphēra, from Latin sphaera (“ball, globe, celestial sphere”), from Ancient Greek σφαῖρα (sphaîra, “ball, globe”). Replaced Old French espere, from the same Latin source.


aire

Inherited from Old French aire, eire, from Latin ārea. Doublet of are and area, which were learned borrowings.

une aire


roulette

→ Catalan: ruleta

→ Czech: ruleta

→ Danish: roulette, roulet

→ English: roulette

→ Galician: ruleta

→ German: Roulette (see there for further descendants)

→ Italian: roulette

→ Japanese: ルーレット

→ Norwegian Bokmål: rulett

→ Norwegian Nynorsk: rulett

→ Portuguese: roleta

→ Spanish: ruleta

→ Swedish: roulett

→ Thai: รูเล็ตต์ (ruu-lèt)


normale

(geometry) Line perpendicular to a curve


hauteur

La hauteur d’un parallélogramme est perpendiculaire à sa base.

The height of a parallelogram is perpendicular to its base.


grade

→ Romanian: grad

Borrowed from Latin gradus. Compare degré. Doublet of gradus.


ellipse

Borrowed from Latin ellīpsis, itself a borrowing from Ancient Greek ἔλλειψις (élleipsis).


rayon

desctree

→ Russian: райо́н (rajón), раіо́нъ (raión) — Pre-reform orthography (1918)
→ English: raion
→ Ingrian: raijona, rajona
→ Romanian: raion
→ Uyghur: رايون (rayon)
→ Yakut: оройуон (oroyuon)


corde

Inherited from Middle French corde, from Old French corde, borrowed from Latin chorda (“gut”), from Ancient Greek χορδή (khordḗ, “string of gut, cord”).

der

parler de corde dans la maison d’un pendu


carré

fr-adj

carré (feminine carrée, masculine plural carrés, feminine plural carrées)

carrée (feminine)
carrés (masculine plural)
carrées (feminine plural)

Inherited from Middle French quarré, from Old French quarré, from Latin quadrātus. Compare the borrowed doublet cadrat.


diamant

→ Czech: diamant

→ Romanian: diamant

Inherited from Middle French diamant, from Old French diamant, from Late Latin diamas, probably from metathesis of adimas (whence aimant), from Latin adamās, ultimately from Ancient Greek ἀδάμας (adámas).


droit

Inherited from Old French droit (spelled dreit in Early Old French, such as the Oaths of Strasbourg), inherited from Late Latin drictus, syncopated form of Latin dīrēctus. Doublet of direct. In Middle French, it was for a time spelled droict to reflect the original Latin etymology.

Un angle de trois droits.


droit

droit (feminine droite, masculine plural droits, feminine plural droites)

droite (feminine)
droits (masculine plural)
droites (feminine plural)


quadrangle

Inherited from Old French quadrangle, from Late Latin quadrangulum.


carreau

→ Bulgarian: каро́ (karó)

→ German: Karo n

→ Macedonian: каро n (karo)

→ Serbo-Croatian:

Cyrillic script: ка̏ро m

Latin script: kȁro m

→ Occitan: carrèu

→ Catalan: carreu

→ Polish: karo n

→ Romanian: carou

→ Turkish: karo

→ Vietnamese: ca-rô

Inherited from Old French quarel, from Vulgar Latin *quadrellus from Classical Latin quadrus. Compare Italian quadrello, Spanish cuadrillo.


droite

Feminine form of droit. Compare Catalan dreta, Italian dritta, Portuguese direita, Spanish derecha, Romanian dreapta.


cercle

Haitian Creole: sèk

Inherited from Old French cercle, from Latin circulus.


cote

Inherited from Middle French quote, quotte, borrowed from Late Latin quota, from Latin quotus. Doublet of quota, an unadapted borrowing.

(analytic geometry) applicate, z-coordinate (the last of the three terms by which a point is referred to, in a system of Cartesian coordinates for a three-dimensional space)


anse

Inherited from Middle French anse, from Late Old French anse, borrowed from Latin ānsa.

(geometry) an arc segment, from which an object is suspended


tangente

Borrowed from Latin tangēntem, an ellipsis of [līnea] tangēns, "touching line".


-èdre

Borrowed from Ancient Greek ἕδρα (hédra, “seat, base”).

bor+

hexa- (“hexa-”) + -èdre → hexaèdre (“hexahedron”)


-èdre

hexa- (“hexa-”) + -èdre → hexaèdre (“hexahedral”)


ovale

→ Greek: οβάλ (ovál)

→ Romanian: oval

→ Turkish: oval


hélice

Borrowed from Latin helix, from Ancient Greek ἕλιξ (hélix).


pyramide

Borrowed from Latin pȳramis, itself a borrowing from Ancient Greek πυραμίς (puramís).


seconde d'angle

fr-noun

seconde d’angle f (plural secondes d’angle)

seconde d’ angle (canonical feminine)
secondes d’angle (plural)

(geometry) a second, 1/60 of a minute, or 1/3.600 of a degree, as unit of angular measure


polygone

Learned borrowing from Latin polygōnum, from Ancient Greek πολύγωνον (polúgōnon).


enveloppe

→ Dutch: envelop (see there for further descendants)

→ English: envelope

→ Portuguese: envelope

→ Vietnamese: lốp

Inherited from Middle French enveloppe, anveloppe, from Old French envelope (“that which envelops, a type of garment”), from envoloper, anveloper (“to wrap around, enfold, cover”).

inh

(geometry) envelope (of a family of curves)


parallèle

Inherited from Middle French parallèle, borrowed from Latin parallēlus.


géométrie

From géo- + -métrie, from Ancient Greek γεωμετρία (geōmetría, “geometry, land-survey”), from γεωμετρέω (geōmetréō, “to practice or to profess geometry, to measure, to survey land”), from γαία (gaía, “earth, land, country”) + μετρέω (metréō, “to measure, to count”).

uder

géométrie euclidienne

géométrie différentielle

géométrie projective

géométrie algébrique

géométrie sphérique

géométrie hyperbolique

géométrie synthétique

géométrie elliptique

géométrie analytique

géométrie symplectique

géométrie métrique


secteur

→ Romanian: sector

→ Turkish: sektör

(geometry) circular sector (part of a circle, extending to the center)


parallélogramme

fr-noun

parallélogramme m (plural parallélogrammes)

Borrowed from Latin parallēlogrammum, itself a borrowing from Ancient Greek παραλληλόγραμμον (parallēlógrammon).

der

παραλληλόγραμμον


obtus

fr-adj

obtus (feminine obtuse, masculine plural obtus, feminine plural obtuses)

obtuse (feminine)
obtus (masculine plural)
obtuses (feminine plural)

From Old French obtus (14th c.), a borrowing from Latin obtūsus.


cylindre

desctree

→ Ottoman Turkish: سلندر (silinder), سیلندر (silindir)
Turkish: silindir

→ Romanian: cilindru

Inherited from Middle French chilindre, cylindre, that borrowed from Latin cylindrus, itself a borrowing from Ancient Greek κύλινδρος (kúlindros). Doublet of calandre.


équerre

Inherited from Old French esquarre (“square”), from Vulgar Latin *exquadra, deverbal of *exquadrō, exquadrāre (whence French équarrir), from Latin quadrus, quadra. Compare Italian squadra. Doublet of escadre and square.


heptagone

heptagon (a polygon with seven sides and seven angles)


pentagone

From Latin pentagonus, which came from πεντάγωνος (pentágōnos). Morphologically penta- + -gone.

pentagon (a polygon with five sides and five angles)


cerf-volant

Possibly from Old French serpe (“serpent, dragon”) + volant (“flying”), converging with cerf-volant due to the similar pronunciation and appearance.

af

Old French <i class="Latn mention" lang="fro">serpe</i>


hyperbolique

→ Turkish: hiperbolik

Borrowed from Latin hyperbolicus, from Ancient Greek [Term?].


carrelage

(geometry) tiling, tesselation (tiling pattern with no gaps)


antiparallélogramme

fr-noun

antiparallélogramme m (plural antiparallélogrammes)


quadrilatère

Learned borrowing from Late Latin quadrilaterus.

lbor

(geometry) quadrilateral (any polygon with four sides)


trapèze

→ English: trapeze

→ Romanian: trapez

→ Turkish: trapez


angle droit

(geometry) right angle (angle of 90 degrees)


hémicycle

Learned borrowing from Latin hēmicyclium, itself borrowed from Ancient Greek ἡμικύκλιον (hēmikúklion).


parallélépipède

fr-noun

parallélépipède m (plural parallélépipèdes)

Borrowed from Latin parallēlepipedum, itself a borrowing from Ancient Greek παραλληλεπίπεδον (parallēlepípedon).

der

παραλληλεπίπεδον

un parallélépipède rectangle


irrégulier

fr-adj

irrégulier (feminine irrégulière, masculine plural irréguliers, feminine plural irrégulières)

irrégulière (feminine)
irréguliers (masculine plural)
irrégulières (feminine plural)

Inherited from Middle French irregulier, a borrowing from Late Latin irrēgulāris.


régulier

régulier (feminine régulière, masculine plural réguliers, feminine plural régulières)

régulière (feminine)
réguliers (masculine plural)
régulières (feminine plural)

Inherited from Old French reguler, borrowed from Late Latin regulāris.


tétraèdre

Learned borrowing from Ancient Greek τετράεδρον (tetráedron, “triangle-based pyramid”), from τετράεδρος (tetráedros), from τετράς (tetrás, “four”) + ἕδρα (hédra, “seat”).

lbor

(geometry) tetrahedron (polyhedron with four faces)


acutangle

triangle acutangle


périphérie

→ Turkish: periferi

Learned borrowing from Latin peripherīa, itself borrowed from Ancient Greek περιφέρεια (periphéreia).


hexaèdre

Borrowed from Latin hexahedrum (“hexahedron”), from Ancient Greek ἑξάεδρος (hexáedros, “having six faces”). By surface analysis, hexa- + -èdre.


concentrique

Coordinate term: excentrique

des cercles concentriques

(geometry) concentric (having a common center)


diamétral

fr-adj

diamétral (feminine diamétrale, masculine plural diamétraux, feminine plural diamétrales)

diamétrale (feminine)
diamétraux (masculine plural)
diamétrales (feminine plural)


excentrique

Learned borrowing from Medieval Latin excentricus, from ex- (“away”) + centrum (“the centre”) + -icus. By surface analysis, ex- + centre + -ique.

surface analysis

Coordinate term: concentrique

(geometry) eccentric (not having the same centre)


épure

From the verb épurer (“to purify, to clear”): a sketch cleared of superfluous elements.

(geometry) two-dimensional representation to scale of a three-dimensional object [since 1859]


isocèle

Borrowed from Late Latin isoscelēs, itself a borrowing from Ancient Greek ἰσοσκελής (isoskelḗs), from ἴσος (ísos, “equal”) + σκέλος (skélos, “leg”).


équilatéral

fr-adj

équilatéral (feminine équilatérale, masculine plural équilatéraux, feminine plural équilatérales)

équilatérale (feminine)
équilatéraux (masculine plural)
équilatérales (feminine plural)

Learned borrowing from Latin aequilaterālis.


bissecteur

fr-adj

bissecteur (feminine bissectrice, masculine plural bissecteurs, feminine plural bissectrices)

bissectrice (feminine)
bissecteurs (masculine plural)
bissectrices (feminine plural)


sous-tendre

sous-tendre (infinitive)
avoir + past participle (infinitive multiword-construction)
sous-tendant (gerund participle present)
ayant + past participle (gerund multiword-construction participle present)
sous-tendu (participle past)
sous-tends (first-person indicative present singular)
sous-tends (indicative present second-person singular)
sous-tend (indicative present singular third-person)
sous-tendons (first-person indicative plural present)
sous-tendez (indicative plural present second-person)
sous-tendent (indicative plural present third-person)
sous-tendais (first-person imperfect indicative singular)
sous-tendais (imperfect indicative second-person singular)
sous-tendait (imperfect indicative singular third-person)
sous-tendions (first-person imperfect indicative plural)
sous-tendiez (imperfect indicative plural second-person)
sous-tendaient (imperfect indicative plural third-person)
sous-tendis (first-person historic indicative past singular)
sous-tendis (historic indicative past second-person singular)
sous-tendit (historic indicative past singular third-person)
sous-tendîmes (first-person historic indicative past plural)
sous-tendîtes (historic indicative past plural second-person)
sous-tendirent (historic indicative past plural third-person)
sous-tendrai (first-person future indicative singular)
sous-tendras (future indicative second-person singular)
sous-tendra (future indicative singular third-person)
sous-tendrons (first-person future indicative plural)
sous-tendrez (future indicative plural second-person)
sous-tendront (future indicative plural third-person)
sous-tendrais (conditional first-person singular)
sous-tendrais (conditional second-person singular)
sous-tendrait (conditional singular third-person)
sous-tendrions (conditional first-person plural)
sous-tendriez (conditional plural second-person)
sous-tendraient (conditional plural third-person)
future of avoir + past participle (future indicative multiword-construction perfect)
conditional of avoir + past participle (conditional multiword-construction perfect)
sous-tende (first-person present singular subjunctive)
sous-tendes (present second-person singular subjunctive)
sous-tende (present singular subjunctive third-person)
sous-tendions (first-person plural present subjunctive)
sous-tendiez (plural present second-person subjunctive)
sous-tendent (plural present subjunctive third-person)
sous-tendisse (first-person imperfect singular subjunctive)
sous-tendisses (imperfect second-person singular subjunctive)
sous-tendît (imperfect singular subjunctive third-person)
sous-tendissions (first-person imperfect plural subjunctive)
sous-tendissiez (imperfect plural second-person subjunctive)
sous-tendissent (imperfect plural subjunctive third-person)
sous-tends (imperative second-person singular)
sous-tendons (first-person imperative plural)
sous-tendez (imperative plural second-person)


théorème de Pythagore

LL-Q150 (fra)-WikiLucas00-théorème de Pythagore.wav

(geometry, functional analysis) the Pythagorean theorem


osculateur

osculateur (feminine osculatrice, masculine plural osculateurs, feminine plural osculatrices)

osculatrice (feminine)
osculateurs (masculine plural)
osculatrices (feminine plural)


anallagmatique

From an- + Ancient Greek ἄλλαγμα (állagma, “change”) + -ique.


cathète

→ Khmer: កាតែត (kaataet)

Borrowed from Learned borrowing from Ancient Greek κάθετος (káthetos).


chiliogone

From Ancient Greek χιλιάγωνος (khiliágōnos), from χίλιοι (khílioi, “thousand”) + γωνία (gōnía, “angle”).


cubohémioctaèdre

fr-noun

cubohémioctaèdre m (plural cubohémioctaèdres)


cubicuboctaèdre

cubicuboctaèdre m (plural cubicuboctaèdres)


dodécahémicosaèdre

dodécahémicosaèdre m (plural dodécahémicosaèdres)


dodécicosaèdre

dodécicosaèdre m (plural dodécicosaèdres)


ennéagonal

fr-adj

ennéagonal (feminine ennéagonale, masculine plural ennéagonaux, feminine plural ennéagonales)

ennéagonale (feminine)
ennéagonaux (masculine plural)
ennéagonales (feminine plural)


isopleure

Borrowed from Ancient Greek ἰσόπλευρος (isópleuros), from ἴσος (ísos, “equal”) + πλευρά (pleurá, “side”).

bor+

(obsolete, geometry) isopleuron, equilateral


rhombododécaèdre

fr-noun

rhombododécaèdre m (plural rhombododécaèdres)

(geometry) Alternative form of rhombidodécaèdre


sphéroforme

sphéroforme m or f (plural sphéroformes)


trapézien

fr-adj

trapézien (feminine trapézienne, masculine plural trapéziens, feminine plural trapéziennes)

trapézienne (feminine)
trapéziens (masculine plural)
trapéziennes (feminine plural)


angle aigu

/ɑ̃.ɡl‿ɛ.ɡy/


angle complémentaire

fr-noun

angle complémentaire m (plural angles complémentaires)


angle supplémentaire

angle supplémentaire m (plural angles supplémentaires)


quadrature du cercle

quadrature du cercle f (usually uncountable, plural quadratures du cercle)

chercher la quadrature du cercle

quadrature of the circle
quadrature of the circle

(geometry) quadrature of the circle, squaring the circle


demi-cercle

First attested in the 14th century. demi- + cercle.


axe de symétrie

axe de symétrie m (plural axes de symétrie)


axe de rotation

axe de rotation m (plural axes de rotation)

LL-Q150 (fra)-WikiLucas00-axe de rotation.wav


point de rebroussement

point de rebroussement m (plural points de rebroussement)

mathematical analysis
mathematical analysis


solide de révolution

solide de révolution m (plural solides de révolution)


ligne directrice

ligne directrice f (plural lignes directrices)


tridécagone

tridecagon (a polygon with thirteen sides and thirteen angles)


angle solide

Coordinate term: angle plan

(geometry) solid angle (three-dimensional analog of an angle)


bouteille de Klein

bouteille de Klein f (plural bouteilles de Klein)

LL-Q150 (fra)-Lepticed7-bouteille de Klein.wav


angle sphérique

angle sphérique m (plural angles sphériques)


angle plat

(geometry) straight angle (an angle that is equal to 180° (pi radians or two right angles))


arc de cercle

LL-Q150 (fra)-Poslovitch-arc de cercle.wav


axe de révolution

axe de révolution m (plural axes de révolution)


petit axe

Coordinate term: grand axe

(geometry) minor axis (shortest diameter of an ellipse, which bisects the major axis at a right angle)


demi-petit axe

demi-petit axe m (plural demi-petits axes)

Coordinate term: demi-grand axe

(geometry) semiminor axis (half of the minor axis of a circle or ellipse)


grand axe

Coordinate term: petit axe

(geometry) major axis (longest diameter of an ellipse, running through the center and foci, with its ends being the widest points of the shape)


demi-grand axe

demi-grand axe m (plural demi-grands axes)

Coordinate term: demi-petit axe

(geometry) semimajor axis (half of the major axis of a circle or ellipse)


géométrie différentielle

géométrie différentielle f (uncountable)

differential geometry
differential geometry


géométrie non euclidienne

géométrie non euclidienne f (plural géométries non euclidiennes)

Coordinate term: géométrie euclidienne

non-Euclidean geometry
non-Euclidean geometry


géométrie euclidienne

Coordinate term: géométrie non-euclidienne


théorème de Thalès

LL-Q150 (fra)-WikiLucas00-théorème de Thalès.wav

(geometry) intercept theorem, Thales's theorem


GAGA

(algebraic geometry) Acronym of Géometrie Algébrique et Géométrie Analytique (a landmark paper by Jean-Pierre Serre)


espace euclidien

espace euclidien m (plural espaces euclidiens)

(geometry) Euclidean space (ordinary n-dimensional space, characterized by an infinite extent along each dimension and a constant distance between any pair of parallel lines)


fonction de transfert

fonction de transfert f (plural fonctions de transfert)

LL-Q150 (fra)-Lepticed7-fonction de transfert.wav