Geometry vocabulary

Geometry Vocabulary

• angle aigu (resp. obtus) / acute (resp. obtuse) angle
• arête / edge
• bissectrice / bisector
• centre de gravité / centroid
• centre du cercle circonscrit / circumcentre
• centre du cercle inscrit / incenter
• cercle circonscrit / circumcircle
• se chevaucher / to overlap
• circonférence / circumference
• coefficient directeur / slope
• coin (e.g. d’une figure) / wedge
• confondu (pour un point) / coincident
• corde (d’un cercle) / chord
• cosinus, sinus / cosine, sine
• courbure / curvature
• couronne (géométrique) / annulus
• courbe paramétrée / parametric curve
• courbe représentative / graph
• dessin à l’échelle / scale drawing
• enveloppe convexe / convex hull
• extrémité / endpoint
• forme / shape
• hauteur (pied de la hauteur) / altitude (the foot of the altitude)
  
  • In geometry, an altitude of a triangle is a line segment through a vertex and perpendicular to (i.e., forming a right angle with) a line containing the base (the side opposite the vertex).
    This line containing the opposite side is called the extended base of the altitude. The intersection of the extended base and the altitude is called the foot of the altitude.
    The length of the altitude, often simply called "the altitude", is the distance between the extended base and the vertex.
    The process of drawing the altitude from the vertex to the foot is known as dropping the altitude at that vertex. It is a special case of orthogonal projection.
• homothetie / homothety (or homothecy, or homogeneous dilation)
• hyperbole / hyperbola
• isocèle / isosceles
• losange / rhombus
• milieu / midpoint
• médiane / median
• médiatrice / perpendicular bisector
• orthocentre / orthocentre
• parallélépipède rectangle / cuboid
• pavage / tiling, tessellation
  • A tessellation or tiling is the covering of a surface, often a plane, using one or more geometric shapes, called tiles, with no overlaps and no gaps.
• point col / saddle point
• point de rebroussement / cusp
• rayon (d’un cercle) / radius
• repère cartésien / Cartesian coordinate system
  • A Cartesian coordinate system in a plane is a coordinate system that specifies each point uniquely by a pair of numerical coordinates, which are the signed distances to the point from two fixed perpendicular oriented lines, measured in the same unit of length.
• réseau / lattice
• sens des aiguilles d’une montre, horaire / clockwise, Normal left rotation
• sens inverse des aiguilles d’une montre, antihoraire, sens trigonométrique / counterclockwise, Normal right rotation
• sommet / vertex
• système de coordonnées, repère / coordinate system