| Subject | English | German |
| gen. | acute triangle | spitzwinkliges Dreieck |
| brit. | advance warning triangle | Warndreieck |
| med. | anal triangle | Aftergegend (regio analis) |
| med. | anal triangle | Analdreieck (regio analis) |
| med. | anal triangle | Analregion (regio analis) |
| opt. | angle of a spherical triangle | Winkel eines sphärischen Dreiecks (the dihedral angle between the two great planes that form the angle) |
| transp., construct. | apex of the theoretical triangle | Spitze des theoretischen Dreiecks |
| med. | Arlt triangle | Arlt Dreieck |
| med. | Arrighi triangle | Arrighi Dreieck |
| med. | Arrighi triangle | ABC-Ableitung |
| fin., scient. | ascending triangle | aufsteigendes Dreieck |
| med. | Assézat triangle | Assézat Dreieck |
| life.sc. | astronomic triangle | astronomisches Dreieck |
| phys. | astronomical triangle | nautisches Dreieck |
| life.sc. | astronomical triangle | astronomisches Dreieck |
| phys. | astronomical triangle | Polardreieck |
| astr. | astronomical triangle | nautisches Dreieck (PZS triangle) |
| med. | auxometric triangle | auxometrisches Dreieck |
| med. | auxometric triangle | Gobessi Dreieck |
| gen. | Bermuda triangle | Bermudadreieck |
| med. | bladder triangle | Harnblasendreieck (trigonum vesicae, trigonum vesicae urinariae) |
| med. | bladder triangle | Lieutaud-Dreieck (trigonum vesicae, trigonum vesicae urinariae) |
| med. | bladder triangle | Blasendreieck (trigonum vesicae, trigonum vesicae urinariae) |
| social.sc. | blue triangle on orange ground | blaues Dreieck auf orangefarbenem Grund |
| med. | Bonwill triangle | Bonwill Dreieck |
| transp. | brake triangle | Bremsdreieck |
| gen. | brake triangle | Bremsdreieck Eisenbahn |
| med. | Bryant triangle | Bryant Dreieck |
| med. | Bryant’s triangle | Bryantsches Dreieck |
| gen. | Bryant's triangle | Bryant-Dreieck |
| med. | Burow triangle | Burow Dreieck |
| med. | Béclard triangle | Béclard Dreieck |
| med. | Calot triangle | Calot Dreieck |
| med. | carotid triangle | Malgaigne-Fossa (trigonum caroticum) |
| med. | carotid triangle | Karotisdreieck (trigonum caroticum) |
| life.sc. | chain of triangles | Dreieckskette |
| med. | Chauffard triangle | Chauffard Dreieck |
| gen. | cheese triangle | Käseecke |
| chem. | clay triangle | Drahtdreieck |
| chem. | clay triangle | Tondreieck |
| med. | Codman triangle | Codman Dreieck |
| phys. | color triangle | Farbendreieck |
| earth.sc., el. | color triangle | Farbdreieck |
| earth.sc., el. | color triangle | Farbtafel |
| earth.sc. | colour triangle | Farbentafel |
| commun. | colour triangle | Farbendreieck (video encoding) |
| commun. | colour triangle | Farbdreieck (video encoding) |
| commun. | colour triangle | Farbdiagramm (video encoding) |
| tech. | colour triangle | Farbtafel |
| tech. | colour triangle | Farbdreieck |
| AI. | congruent triangle | kongruentes Dreieck |
| life.sc., coal. | connecting triangle | Anschlussdreieck |
| life.sc., coal. | connecting triangle on surface of shaft plumbing | Obendreieck |
| met. | crucible triangle | Glühring |
| chem. | crucible triangle | Tiegeldreieck |
| med. | crural triangle | Trigonum femorale (trigonum femorale) |
| med. | crural triangle | Fossa scarpae major (trigonum femorale) |
| med. | crural triangle | Schenkeldreieck (trigonum femorale) |
| med. | crural triangle | Leistendreieck (trigonum femorale) |
| fish.farm. | dan leno triangle | Joch |
| fish.farm. | dan leno triangle | Dan-Leno-Dreieck |
| fin. | descending triangle | absteigendes Dreieck |
| med. | Desjardins triangle | Desjardins Dreieck |
| med. | digastric triangle | Spatium submaxillare |
| med. | digastric triangle | Unterkieferdreieck (trigonum submandibulare) |
| phys. | direction-finder triangle | Peildreieck |
| phys. | direction-finding triangle | Peildreieck |
| med. | Dittmar-Ruppert triangle | Dittmar-Ruppert Grippedreieck |
| opt. | divide into triangles | in Dreiecke teilen |
| med. | Einthoven triangle | Einthoven Dreieck |
| med. | Einthoven triangle | Einthoven-Dreieck |
| med. | Elaut triangle | Elaut Dreieck |
| earth.sc., mech.eng. | entry triangle | Eintrittsdreieck |
| gen. | equilateral triangle | gleichseitiges Dreieck |
| gen. | eternal triangle | Dreiecksverhältnis |
| life.sc. | excess of a triangle | Exzess eines Dreiecks |
| fin., scient. | expanding triangle | Spannungsmuster |
| coal. | explosion triangle | Explosionsdreieck |
| opt. | external angle of the oblique triangle | Außenwinkel des schiefwinkligen Dreiecks |
| gen. | famine triangle | Hungerdreieck |
| med. | femoral triangle | Fossa scarpae major (trigonum femorale) |
| med. | femoral triangle | Leistendreieck (trigonum femorale) |
| med. | femoral triangle | Trigonum femorale (trigonum femorale) |
| med. | femoral triangle | Schenkeldreieck (trigonum femorale) |
| emerg.care | fire triangle | Feuertriangel |
| gen. | fire triangle | Feuerdreieck |
| gen. | fire triangle | Branddreieck |
| earth.sc. | force triangle | Kraeftedreieck |
| sail. | fore triangle | Vorsegeldreieck |
| med. | forward triangle formula | Forward triangle-Formel |
| med. | fossa scarpae major Scarpa's triangle | Leistendreieck (trigonum femorale) |
| med. | fossa scarpae major Scarpa's triangle | Trigonum femorale (trigonum femorale) |
| med. | fossa scarpae major Scarpa's triangle | Fossa scarpae major (trigonum femorale) |
| med. | fossa scarpae major Scarpa's triangle | Schenkeldreieck (trigonum femorale) |
| med. | Garland’s triangle | Garlandsches Dreieck |
| astr. | general triangle | ungleichseitiges Dreieck |
| med. | Glisson triangle | Glisson Scheide |
| med. | Glisson triangle | interlobulares Gewebe |
| med. | Glisson triangle | Portalfeld |
| med. | Glisson triangle | Peri-Portalfeld |
| med. | Glisson triangle | Glisson Feld |
| med. | Glisson triangle | periportales Gewebe |
| med. | Glisson triangle | portobiliäres Gewebe |
| med. | Glisson triangle | portales Dreieck |
| med. | Glisson triangle | Glisson Dreieck |
| geogr. | Golden Triangle | Goldenes Dreieck |
| med. | Gombault triangle | Gombault-Triangel |
| med. | Gombault triangle | Gombault-Philippe-Dreieck |
| med. | Gombault-Philippe's triangle | Fasciculus triangularis |
| med. | Grocco triangle | kontralaterale Hypophonesie |
| med. | Grocco triangle | Rauchfuß Dreieck |
| med. | Grocco triangle | Grocco-Rauchfuß Dreieck |
| med. | Grocco’s triangle | Rauchfuß-Groccosches Dreieck |
| med. | Grocco's triangle | Groccosches Dreieck |
| med. | Grocco's triangle | Rauchfussches Dreieck |
| med. | Grocco’s triangle | Grocco-Rauchfußsches Dreieck |
| med. | Grynfeldt triangle | Grynfeldt-Lesshaft-Luschka Dreieck |
| med. | Grynfeldt triangle | Grynfeldt-Dreieck |
| med. | Hacker triangle | Hacker Triangel |
| social.sc. | health and safety triangle | Gesundheitsschutz- und Sicherheitsdreieck |
| gen. | height of fundamental triangle | Profilhöhe |
| med. | Hesselbach triangle | Hesselbach Dreieck |
| med. | Hueter triangle | Hueter Dreieck |
| med. | hypoglossohyoid triangle | Pirogowsches Dreieck |
| el. | illuminated triangle | beleuchtetes Dreieck |
| el. | impedance triangle | Widerstandsdreieck |
| el. | impedance triangle | Impedanzdreieck |
| med. | inferior carotid triangle | unteres Karotisdreieck |
| med. | inferior lumbar triangle | Petit-Dreieck (trigonum lumbale inferius) |
| med. | inferior lumbar triangle | unteres Lendendreieck (trigonum lumbale inferius) |
| med. | influenzal triangle | Grippedreieck |
| med. | infraclavicular triangle | Infraklavikulargrube (fossa infraclavicularis) |
| med. | infraclavicular triangle | Unterschlüsselbeingrube (fossa infraclavicularis) |
| med. | infraclavicular triangle | Mohrenheimsche Grube (trigonum clavipectorale, trigonum deltoideopectorale) |
| med. | infraclavicular triangle | Trigonum deltoideopectorale (trigonum clavipectorale, trigonum deltoideopectorale) |
| med. | infraclavicular triangle | Mohrenheim-Grube (fossa infraclavicularis) |
| med. | inguinal triangle | Schenkeldreieck (trigonum femorale) |
| med. | inguinal triangle | Trigonum femorale (trigonum femorale) |
| med. | inguinal triangle | Fossa scarpae major (trigonum femorale) |
| med. | inguinal triangle | Leistendreieck (trigonum femorale) |
| earth.sc., mech.eng. | inlet triangle | Eintrittsdreieck |
| opt. | inscribed triangle | eingeschriebenes Dreieck |
| opt. | internal angle of the oblique triangle | Innenwinkel des schiefwinkligen Dreiecks |
| scient. | irregular triangle | ungleichseitiges Dreieck |
| scient. | irregular triangle | ungleichschenkliges Dreieck |
| scient. | isoceles triangle | gleichschenkliges Dreieck |
| opt. | isosceles right triangle | gleichschenkliges rechtwinkliges Dreieck |
| gen. | isosceles triangle | gleichschenkliges Dreieck |
| med. | Jackson safety triangle | Jackson Sicherheitsdreieck |
| med. | Jackson safety triangle | Jackson Dreieck |
| ed. | knowledge triangle | Wissensdreieck |
| med. | Koch triangle | Koch Dreieck |
| med. | Koenig triangle | Koenig Dreieck |
| scient. | leg of a right triangle | Kathete |
| med. | Lientaud triangle | Lieutaud-Dreieck (trigonum vesicae, trigonum vesicae urinariae) |
| med. | Lientaud triangle | Harnblasendreieck (trigonum vesicae, trigonum vesicae urinariae) |
| med. | Lientaud triangle | Blasendreieck (trigonum vesicae, trigonum vesicae urinariae) |
| med. | Lieutaud's triangle | Trigonum vesicae (trigonum vesicae (Lieutaudi)) |
| med. | Lieutaud's triangle | Blasendreieck (trigonum vesicae (Lieutaudi)) |
| gen. | love triangle | Dreiecksverhältnis |
| gen. | love triangle | Dreiecksgeschichte |
| gen. | love triangle | Dreiecksbeziehung |
| med. | lumbar triangle | Petit-Dreieck (trigonum lumbale inferius) |
| med. | lumbar triangle | unteres Lendendreieck (trigonum lumbale inferius) |
| med. | lymphoid triangle | Schlundring |
| med. | lymphoid triangle | Rachenring |
| busin. | magic triangle | magisches Dreieck |
| med. | Malgaigne triangle | Malgaigne-Fossa (trigonum caroticum) |
| med. | Malgaigne triangle | Karotisdreieck (trigonum caroticum) |
| biol. | Maxwell triangle | Maxwell-Dreieck |
| transp., tech. | measuring triangle | Stoßlückenmesser |
| med. | Mohrenheim triangle | Infraklavikulargrube (fossa infraclavicularis) |
| med. | Mohrenheim triangle | Unterschlüsselbeingrube (fossa infraclavicularis) |
| med. | Mohrenheim triangle | Mohrenheim-Grube (fossa infraclavicularis) |
| opt. | nautical triangle | nautisches Dreieck |
| phys. | navigational triangle | Polardreieck |
| phys. | navigational triangle | nautisches Dreieck |
| med. | Nehb triangle | Nehb-Dreieck |
| med. | Nehb’s triangle | Nehbsches Dreieck |
| transp. | Nordic Triangle | Nordisches Dreieck |
| gen. | oblique triangle | schiefwinkliges Dreieck |
| gen. | oblique triangle | nicht rechtwinkliges Dreieck |
| gen. | obtuse triangle | stumpfwinkliges Dreieck |
| earth.sc., mech.eng. | outlet velocity triangle | Austrittsdreieck |
| phys. | parallactic triangle | parallaktisches Dreieck |
| astr. | parallactic triangle | Polardreieck |
| phys. | Pascal's triangle | Pascalsches Dreieck |
| med. | Pawlik's triangle | Trigonum vaginale Pawlik |
| med. | pertussis triangle | Pertussisdreieck |
| med. | Petit lumbar triangle | Petit-Dreieck (trigonum lumbale inferius) |
| med. | Petit lumbar triangle | unteres Lendendreieck (trigonum lumbale inferius) |
| med. | Petit triangle | Petit-Dreieck (trigonum lumbale inferius) |
| med. | Petit triangle | Petit Dreieck |
| med. | Petit triangle | unteres Lendendreieck (trigonum lumbale inferius) |
| med. | Petit's triangle | Lendendreieck (trigonum lumbale (Petiti)) |
| med. | Philippe-Gombault triangle | Gombault-Philippe-Dreieck |
| med. | Philippe-Gombault triangle | Philippe-Gombault-Trigonum |
| med. | Pinaud's triangle | Pirogowsches Dreieck |
| gen. | pink triangle worn by homosexuals in Nazi concentration camps | Rosa Winkel |
| chem. | pipe clay triangle | Drahtdreieck |
| chem. | pipe clay triangle | Tondreieck |
| chem. | pipeclay triangle | Drahtdreieck |
| chem. | pipe-clay triangle | Tondreieck |
| tech. | pipeclay triangle | Tondreieck |
| med. | Pirogoff triangle | Pirogoff Dreieck |
| med. | Pirogoff's triangle | Pirogowsches Dreieck |
| astr. | plane triangle | ebenes Dreieck |
| tech. | plane triangle | Dreieck |
| phys. | polar triangle | Polardreieck |
| med. | posterior triangle of neck | hinteres Halsdreieck (regio cervicalis lateralis, trigonum cervicale posterius) |
| phys. | Potier triangle | Potiersches Dreieck |
| phys. | Potier's triangle | Potiersches Dreieck |
| life.sc. | primary triangle | Hauptdreieck |
| comp., MS | project triangle | magisches Dreieck (The interrelationship of time, money, and scope. If you adjust any one of these elements, the other two are affected. For example, if you adjust the project plan to shorten the schedule, you might increase costs and decrease scope) |
| gen. | railway triangle | Gleisdreieck |
| opt. | range triangle | Meßdreieck |
| gen. | red triangle | rotes Warndreieck |
| med. | Reil's triangle | Schleifendreieck (trigonum lemnisci) |
| life.sc. | resection by inverted triangles of error | Rückwärtseinschneiden mit fehlerzeigenden Dreiecken |
| railw. | reversing triangle | Gleisdreieck (makhno) |
| amer. | right triangle | rechtwinkliges Dreieck |
| astr. | right-angled spherical triangle | rechtwinkliges sphärisches Dreieck |
| gen. | right-angled triangle | rechtwinkliges Dreieck |
| construct. | runoff triangle | Querentwässerungsprofil |
| scient. | scalene triangle | ungleichschenkliges Dreieck |
| gen. | scalene triangle | ungleichseitiges Dreieck |
| scient. | scalenous triangle | ungleichseitiges Dreieck |
| scient. | scalenous triangle | ungleichschenkliges Dreieck |
| med. | Scarpa's triangle | Trigonum femorale |
| med. | Scarpa's triangle | Fossa Scarpae major |
| med. | Scarpa's triangle | Leistendreieck |
| med. | Scarpa’s triangle | Scarpasches Dreieck |
| busin., IT | semiotic triangle | semiotisches Dreieck |
| gen. | Sherren's triangle | Sherren-Dreieck |
| scient. | side of a right triangle | Kathete |
| astr. | side of the spherical triangle | Seite des sphärischen Dreiecks |
| weap. | sighting-triangle aiming practice | Dreieckzielen |
| construct. | sliding triangle | Gleitkeil |
| astr. | spherical isosceles triangle | gleichseitiges sphärisches Dreieck |
| gen. | spherical triangle | sphärisches Dreieck |
| phys. | spheroidal triangle | Sphäroiddreieck |
| med. | sternocostal triangle | Trigonum sternocostale diaphragmatis |
| med. | sternocostal triangle | Larreysche Spalte |
| opt. | subdivide into a series of triangles | in eine Reihe von Dreiecken unterteilen |
| med. | submandibular triangle | Spatium submaxillare |
| med. | submandibular triangle | Unterkieferdreieck (trigonum submandibulare) |
| med. | submaxillary triangle | Spatium submaxillare |
| med. | submaxillary triangle | Unterkieferdreieck (trigonum submandibulare) |
| med. | superior carotid triangle | Fossa carotica |
| med. | superior carotid triangle | Malgaignesche Grube |
| med. | superior carotid triangle | Trigonum caroticum |
| med. | superior carotid triangle | oberes Karotisdreieck |
| med. | superior carotid triangle | Malgaigne-Fossa (trigonum caroticum) |
| med. | superior carotid triangle | Karotisdreieck (trigonum caroticum) |
| fin., scient. | symmetrical triangle | symmetrisches Dreieck |
| med. | syndrome of multifidus triangle | Multifidus-Dreieck-Syndrom |
| gen. | the Golden Triangle | das goldene Dreieck |
| phys. | triangle anomaly | Dreiecksanomalie |
| phys. | triangle axiom | Dreiecksungleichung |
| phys. | triangle axiom | Dreiecksaxiom |
| gen. | triangle bandage | Dreiecksverband |
| weap. | triangle bayonet | Dreikantbajonett |
| construct., mun.plan. | Triangle below Canal Street | Dreieck unterhalb der Canal Street |
| gen. | triangle bra | Triangel-BH |
| gen. | triangle butterfly | Triangel-Falterfisch Indischer Baronesse-Falterfisch Chaetodon triangulum |
| comp., MS | triangle cap | dreieckiger Abschluss (For paths that contain unconnected ends, the end of the stroke that is extended to taper to a point) |
| fin. | triangle configuration | Dreieck |
| phys. | triangle connection | Dreieckschaltung |
| coal. | triangle cut | Kegeleinbruch |
| met. | triangle cut | Dreieck-Schnitt |
| coal. | triangle cut | Dreieckseinbruch |
| phys. | triangle diagram | Dreiecksdiagramm |
| auto. | triangle drive | Dreieckstrieb (Benzinpumpe) |
| weap. | triangle exercise | Dreieckzielen |
| phys. | triangle formula | Dreiecksformel |
| el. | triangle generator | Dreieckgenerator |
| math. | triangle inequality | Dreiecksungleichung |
| reptil. | triangle keelback | Dreieck-Wassernatter (Sinonatrix trianguligera) |
| trav. | triangle mark | Dreieckmarkierung |
| construct. | triangle misclosure | Dreieckfehler |
| tech. | triangle nut | Dreikantmutter |
| gen. | triangle of civil protection | Zivilschutz-Dreieck |
| life.sc., coal. | triangle of dip | Falldreieck |
| med. | triangle of election | Malgaignesche Grube |
| med. | triangle of election | Fossa carotica |
| med. | triangle of election | Trigonum caroticum |
| med. | triangle of election | oberes Karotisdreieck |
| life.sc. | triangle of error | Fehler zeigendes Dreieck |
| meas.inst. | triangle of errors | Fehlerdreieck |
| phys. | triangle of forces | Kräftedreieck |
| earth.sc. | triangle of forces | Kraeftedreieck |
| construct. | triangle of forces | Krafteck |
| ed. | triangle of knowledge | Wissensdreieck |
| med. | triangle of necessity | unteres Karotisdreieck |
| med. | triangle of Philippe-Gombault | Gombault-Philippe-Dreieck |
| med. | triangle of Philippe-Gombault | Philippe-Gombault-Trigonum |
| phys. | triangle of position | nautisches Dreieck |
| med. | triangle of the fillet | Schleifendreieck (trigonum lemnisci) |
| handb. | triangle play | Dreieckspiel |
| phys. | triangle pulse | Dreieckimpuls |
| med.appl. | triangle-pulse characteristic | Dreieckimpulscharakteristik |
| med.appl. | triangle-pulse current | Dreieckimpulsstrom |
| auto. | triangle reflector | Dreieck-Rückstrahler |
| phys. | triangle relation | Dreiecksrelation |
| opt. | triangle side | Dreiecksseite |
| comp., MS | triangle strip | Dreieckskette (A sequence of triangles in which adjacent triangles share an edge. The first three vertices define the first triangle, and each subsequent vertex defines a new triangle using that point along with two vertices from the previous triangle in the sequence) |
| tech. | triangle symbol | Dreieckszeichen |
| AI. | triangle table | Dreieckstabelle |
| AI. | triangle table | Dreieckstafel |
| stat. | triangle test | Triangel-Test |
| math. | triangle test | Dreieckstest |
| el. | triangle waveform | dreieckiges Signal |
| textile | twist triangle - | Zwirndreieck |
| busin. | uneasy triangle | magisches Dreieck |
| mech. | unloading triangle | Entlastungsbogen |
| med. | urogenital triangle | Urogenitalregion (regio urogenitalis) |
| med. | vaginal triangle | Trigonum vaginale Pawlik |
| patents. | vehicle breakdown warning triangles | Warndreiecke für Fahrzeuge mit Panne |
| gen. | vehicle breakdown warning triangles | Warndreiecke für Fahrzeuge |
| earth.sc., mech.eng. | velocity triangle | Geschwindigkeitsdreieck |
| med. | vena cava triangle | Kavadreieck |
| opt. | vertex of a right-angled triangle | Scheitel eines rechtwinkligen Dreiecks |
| med. | vesical triangle | Lieutaud-Dreieck (trigonum vesicae, trigonum vesicae urinariae) |
| med. | vesical triangle | Trigonum vesicae (trigonum vesicae (Lieutaudi)) |
| med. | vesical triangle | Harnblasendreieck (trigonum vesicae, trigonum vesicae urinariae) |
| med. | vesical triangle | Blasendreieck (trigonum vesicae, trigonum vesicae urinariae) |
| gen. | Visegrad Triangle | Visegrader Troika |
| tech. | voltage triangle | Spannungsdreieck |
| law, transp., polit. | warning triangle | Autobahndreibock |
| law, transp., polit. | warning triangle | Pannendreieck |
| emerg.care | warning triangle | Warndreieck |
| gen. | warning triangle | Warndreieck |
| gen. | warning triangles | Warndreiecke |
| gen. | Weimar Triangle | Weimarer Dreieck |
| gen. | Weimar triangle | Weimarer Dreieck |
| med. | Wernicke's triangle | Crus occipitale |
| med. | Wernicke's triangle | Pars occipitalis capsulae internae |
| med. | Wilde triangle | Lichtreflex |
| med. | Wilde triangle | Lichtkegel |
| med. | Wilde triangle | Politzer-Lichtreflex |
| med. | Wilde triangle | Trommelfellreflex |
| life.sc. | wind triangle | Winddreieck |
| met. | wire triangle | Drahtdreieck |
| construct. | wooden staircase with triangles nailed to strings | Holztreppe auf Winkelknaggen |
| build.struct. | wooden triangle nailed to stair string | Winkelknagge |
