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Couleurs et Formes - Lignes, Angles et Courbes

Lisez cette leçon pour apprendre les noms de certaines lignes, angles et courbes en anglais, tels que "rayon", "angle aigu" et "arc".

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axis
axis
[nom]

the central point or line around which an object turns

axe

axe

Ex: The fan blades rotated smoothly around their axis. 

Les pales du ventilateur tournaient doucement autour de leur axe.

axis
axis
[nom]

a straight line that defines the symmetry or structure of a figure or object

axe

axe

Ex: The ellipse has both a major and a minor axis. 

L'ellipse possède à la fois un grand axe et un petit axe.

cross
cross
[nom]

a mark or an object formed by two short lines or pieces crossing each other

croix, croisement

croix, croisement

Ex: In math class, we use the symbol "cross" to represent multiplication. 

En cours de mathématiques, nous utilisons le symbole croix pour représenter la multiplication.

diagonal

a straight line connecting opposite corners of a flat shape at an angle

diagonale

diagonale

Ex: He drew a diagonal across the square to divide it into two triangles. 

Il a tracé une diagonale à travers le carré pour le diviser en deux triangles.

zigzag
zigzag
[nom]

(geometry) a shape that consists of a line alternating its direction to left and right

zigzag

zigzag

balbis
balbis
[nom]

a straight line that is terminated by a secondary line at each end, resembling the letter H

balbis, ligne droite terminée par une ligne secondaire à chaque extrémité

balbis, ligne droite terminée par une ligne secondaire à chaque extrémité

ray
ray
[nom]

a straight line that starts at a point and extends infinitely in one direction

rayon, demi-droite

rayon, demi-droite

Ex: In diagrams, rays are often labeled with the endpoint and another point. 

Dans les diagrammes, les rayons sont souvent étiquetés avec le point d'extrémité et un autre point.

line segment

a portion of a straight line that is defined by two distinct endpoints

segment de droite, segment

segment de droite, segment

parallel

a pair of geometric figures, such as lines or planes, that do not meet or intersect, no matter how far they are extended

parallèle, ligne parallèle

parallèle, ligne parallèle

Ex: The architect used several parallels to design the structure. 

L'architecte a utilisé plusieurs parallèles pour concevoir la structure.

perpendicular

a line or structure that meets another at a right angle, creating a 90-degree intersection

perpendiculaire, ligne perpendiculaire

perpendiculaire, ligne perpendiculaire

Ex: The carpenter ensured the shelves were fixed at perfect perpendiculars. 

Le menuisier s'est assuré que les étagères étaient fixées à des perpendiculaires parfaites.

tangent
tangent
[nom]

a straight line that touches a curve or surface at exactly one point, known as the point of tangency

tangente

tangente

Ex: The artist's sketch showed a spiral with multiple tangent lines, illustrating the various points of contact. 

L'esquisse de l'artiste montrait une spirale avec plusieurs lignes tangentes, illustrant les différents points de contact.

secant
secant
[nom]

a line that crosses a curve at least at two distinct points

sécante

sécante

Ex: The secant of the curve intersects it at two different points, forming a distinct angle. 

La sécante de la courbe la coupe en deux points différents, formant un angle distinct.

linear pair

a pair of adjacent angles formed by two intersecting lines, which add up to 180 degrees

paire linéaire, couple linéaire

paire linéaire, couple linéaire

acute angle

an angle that measures between 0 and 90 degrees, which is less than a right angle (90 degrees)

angle aigu, angle inférieur à 90 degrés

angle aigu, angle inférieur à 90 degrés

obtuse angle

an angle that measures more than 90 degrees but less than 180 degrees

angle obtus, angle rentrant

angle obtus, angle rentrant

Ex: The clock hands formed an obtuse angle at 2:30, indicating that it was past noon. 

Les aiguilles de l'horloge formaient un angle obtus à 14h30, indiquant qu'il était passé midi.

right angle

an angle measuring exactly 90 degrees

angle droit

angle droit

Ex: In geometry class, students learn to identify shapes based on the presence of right angles. 

En classe de géométrie, les élèves apprennent à identifier les formes en fonction de la présence d'angles droits.

straight angle

an angle that measures exactly 180 degrees, which is the same as a straight line

angle plat, angle droit de 180 degrés

angle plat, angle droit de 180 degrés

oblique angle

an angle that measures either less or more that 90 degrees

angle oblique, angle non droit

angle oblique, angle non droit

Ex: An acute angle in a right-angled triangle is an example of an oblique angle. 

Un angle aigu dans un triangle rectangle est un exemple d'angle oblique (signifiant un angle qui mesure soit moins soit plus que 90 degrés).

reflex angle

an angle that measures greater than 180 degrees but less than 360 degrees

angle rentrant, angle réflexe

angle rentrant, angle réflexe

full rotation

a complete revolution or turn around a fixed point or axis, covering a 360-degree angle

rotation complète, tour complet

rotation complète, tour complet

positive angle

an angle measured counterclockwise from the initial side of a reference angle in standard position, usually expressed in degrees or radians

angle positif, angle dans le sens positif

angle positif, angle dans le sens positif

negative angle

an angle measured clockwise from the initial side of a reference angle in standard position, usually expressed in degrees or radians

angle négatif, angle orienté négativement

angle négatif, angle orienté négativement

adjacent angles

two angles that share a common vertex and a common side, but do not overlap, and are not in a straight line

angles adjacents, angles contigus

angles adjacents, angles contigus

plane angle

the measure of the tilt between two lines or surfaces in two-dimensional space, typically given in degrees or radians

angle plan, angle dièdre

angle plan, angle dièdre

Ex: A corner of a book forms a right plane angle. 

Un coin de livre forme un angle plan droit.

arc
arc
[nom]

(geometry) a part of a circle, which is curved

arc

arc

Ex: The length of an arc can be calculated using the radius and the angle in degrees. 

La longueur d'un arc peut être calculée en utilisant le rayon et l'angle en degrés.

arc
arc
[nom]

a curved shape

arc

arc

Ex: The path of the fountain water described an arc. 

Le chemin de l'eau de la fontaine décrivait un arc.

concavity

a shape, line or surface that is hollow and is rounded inward

concavité

concavité

conic section

(geometry) a shape formed when a circular cone is intersected by a plane

section conique

section conique

crescent

a curved shape with narrow points at the ends that appears wider in the middle, like the shape of the moon in its first and last quarters

croissant de lune

croissant de lune

Ex: The street was named Crescent Avenue because it curved in a perfect crescent shape. 

La rue a été nommée Avenue Croissant parce qu'elle se courbait en une forme de croissant parfaite.

curl
curl
[nom]

something that resembles a spiral or coil

courbe

courbe

Ex: The cat stretched out on the windowsill, its tail forming a tight curl around its body. 

Le chat s'étira sur le rebord de la fenêtre, sa queue formant une boucle serrée autour de son corps.

spiral
spiral
[nom]

(geometry) a curved shape or design that gradually winds around a center or axis

spirale

spirale

Ex: The seashell exhibited a perfect spiral, intricately formed by nature. 

Le coquillage présentait une spirale parfaite, formée de manière complexe par la nature.

ellipse
ellipse
[nom]

(geometry) a closed plane curve that has two focal points

ellipse

ellipse

parabola

(geometry) a symmetrical open curve that is similar to the path of an object thrown into the air passes till it falls back to earth

parabole

parabole

Ex: The artist drew a parabola to represent the path of the flying object. 

L'artiste a dessiné une parabole pour représenter la trajectoire de l'objet volant.

hyperbola

a geometric curve formed by the intersection of a plane with two cones, resulting in two symmetrical branches

hyperbole, courbe hyperbolique

hyperbole, courbe hyperbolique

Ex: Each branch of a hyperbola resembles a mirrored curve, creating a symmetrical shape. 

Chaque branche d'une hyperbole ressemble à une courbe en miroir, créant une forme symétrique.

simple curve

a continuous curve that does not intersect itself, and can be traced without lifting the pen or pencil from the paper

courbe simple, courbe non intersectante

courbe simple, courbe non intersectante

non-simple curve

a curve that intersects itself, or has overlapping segments, requiring the pen or pencil to be lifted from the paper while tracing it

courbe non simple, courbe auto-intersectante

courbe non simple, courbe auto-intersectante

open curve

a curve that does not intersect itself and has distinct endpoints, meaning it does not form a closed shape or loop

courbe ouverte, arc ouvert

courbe ouverte, arc ouvert

closed curve

a curve that begins and ends at the same point, forming a closed loop

courbe fermée, boucle fermée

courbe fermée, boucle fermée

Couleurs et Formes
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