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two-dimensional figure

Definitions of two-dimensional figure
  1. noun
    a two-dimensional shape
    synonyms: plane figure
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    types:
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    a plane figure with rounded sides curving inward at the top and intersecting at the bottom; conventionally used on playing cards and valentines
    polygon, polygonal shape
    a closed plane figure bounded by straight sides
    conic, conic section
    (geometry) a curve generated by the intersection of a plane and a circular cone
    oblong
    a plane figure that deviates from a square or circle due to elongation
    hemicycle, semicircle
    a plane figure with the shape of half a circle
    sector
    a plane figure bounded by two radii and the included arc of a circle
    star
    a plane figure with 5 or more points; often used as an emblem
    paraboloid
    a surface having parabolic sections parallel to a single coordinate axis and elliptic sections perpendicular to that axis
    ellipsoid
    a surface whose plane sections are all ellipses or circles
    tree, tree diagram
    a figure that branches from a single root
    isogon
    an equiangular polygon
    convex polygon
    a polygon such that no side extended cuts any other side or vertex; it can be cut by a straight line in at most two points
    concave polygon
    a polygon such that there is a straight line that cuts it in four or more points
    ellipse, oval
    a closed plane curve resulting from the intersection of a circular cone and a plane cutting completely through it
    quadrangle, quadrilateral, tetragon
    a four-sided polygon
    triangle, trigon, trilateral
    a three-sided polygon
    hexagram
    a regular polygon formed by extending each of the sides of a regular hexagon to form two equilateral triangles
    asterism
    (mineralogy) a star-shaped figure with six rays that is seen in some crystal structures under reflected or transmitted light
    pentacle, pentagram, pentangle
    a star with 5 points; formed by 5 straight lines between the vertices of a pentagon and enclosing another pentagon
    pentagon
    a five-sided polygon
    hexagon
    a six-sided polygon
    heptagon
    a seven-sided polygon
    octagon
    an eight-sided polygon
    nonagon
    a nine-sided polygon
    decagon
    a polygon with 10 sides and 10 angles
    undecagon
    an eleven-sided polygon
    dodecagon
    a twelve-sided polygon
    spherical polygon
    a figure on the surface of a sphere bounded by arcs of 3 or more great circles
    parabola
    a plane curve formed by the intersection of a right circular cone and a plane parallel to an element of the curve
    hyperbola
    an open curve formed by a plane that cuts the base of a right circular cone
    cladogram
    a tree diagram used to illustrate phylogenetic relationships
    stemma
    a tree diagram showing a reconstruction of the transmission of manuscripts of a literary work
    type of:
    figure
    a combination of points and lines and planes that form a visible palpable shape
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