triangle

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

triangle équilatéral

triangle isocèle


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

→ Luxembourgish: Face

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


hyperbole

→ Romanian: hiperbolă, iperbolă

→ Turkish: hiperbol

→ Vietnamese: hypebol

From Middle French hyperbole, yperbole, a learned borrowing from Latin hyperbolē, itself borrowed from Ancient Greek ὑπερβολή (huperbolḗ, “excess, exaggeration”).


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

→ Persian: پلان (pelân)

→ 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

sphères (plural)
sphære (alternative archaic)

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


lieu

→ English: lieu

Inherited from Middle French lieu, from Old French leu, from Latin locum, from Old Latin stlocus, from Proto-Indo-European *stel- (“to put, place, locate”).

der

(geometry) locus (set of all points whose location satisfies or is determined by one or more specified conditions)


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).


corde

cordes (plural)
chorde (alternative obsolete)

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

parler de corde dans la maison d'un pendu


cellule

→ Persian: سلول (sellul)


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

fr-adj

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.


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.


révolution

→ German: Revolution

→ Persian: رولوسیون (revolusiyon)

→ Turkish: revolüsyon

Learned borrowing from Late Latin revolūtiō, from Latin revolvō.

lbor

solide de révolution

(geometry, astronomy) revolution (turn; rotation)


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”)


hélice

Learned borrowing from Latin helix, itself borrowed from Ancient Greek ἕλιξ (hélix).


seconde d'angle

fr-noun

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

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


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.


parabole

Learned borrowing from Ancient Greek παραβολή (parabolḗ).


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

Learned borrowing from Latin hyperbolicus, itself borrowed from Ancient Greek ὑπερβολικός (huperbolikós). By surface analysis, hyperbole + -ique.

der

sinus hyperbolique

cosinus hyperbolique

fonction hyperbolique


carrelage

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


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)


excentricité

Learned borrowing from Medieval Latin excentricitas. By surface analysis, excentrique + -ité.

(geometry) eccentricity (ratio between distances in a conic section)


parallélépipède

fr-noun

parallélépipède m (plural parallélépipèdes)

parallélépipèdes (plural)
parallélipipède (alternative)

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

der

παραλληλεπίπεδον

un parallélépipède rectangle


directrice

(geometry) ellipsis of ligne directrice: directrix


régulier

fr-adj

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.


irrégulier

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.


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).


conique

Learned borrowing from Ancient Greek κωνικός (kōnikós). By surface analysis, cône + -ique.


hexaèdre

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


concentrique

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)

Borrowed from Latin diametrālis. By surface analysis, diamètre + -al.


excentrique

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

surface analysis

(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)


parabolique

courbe parabolique

trajectoire parabolique


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)
soutendre (alternative)
soustendre (alternative)
subtendre (alternative)


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)

Learned borrowing from Ancient Greek κάθετος (káthetos).


chiliogone

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


cubicuboctaèdre

fr-noun

cubicuboctaèdre m (plural cubicuboctaèdres)


cubohémioctaèdre

cubohémioctaèdre m (plural cubohémioctaèdres)


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)


angle solide

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


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)


demi-grand axe

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

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


grand 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)


petit 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)

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


géométrie non euclidienne

géométrie non euclidienne f (plural géométries non euclidiennes)

non-Euclidean geometry
non-Euclidean geometry


géométrie différentielle

géométrie différentielle f (uncountable)

differential geometry
differential geometry


théorème de Thalès

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

(geometry) intercept theorem, Thales's theorem


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)


point de percée

point de percée m (plural points de percée)


spirale logarithmique

spirale logarithmique f (plural spirales logarithmiques)


spirale d'Archimède

spirale d'Archimède f (plural spirales d'Archimède)