types:
solid
a three-dimensional shape
plane,
sheet
(mathematics) an unbounded two-dimensional shape
figure
a combination of points and lines and planes that form a visible palpable shape
line
a length (straight or curved) without breadth or thickness; the trace of a moving point
round shape
a shape that is curved and without sharp angles
circle
something approximating the shape of a circle
square
something approximating the shape of a square
triangle
something approximating the shape of a triangle
plume
anything that resembles a feather in shape or lightness
curve
a line on a graph representing data
Cartesian plane
a plane in which all points can be described in Cartesian coordinates
facet plane
the plane of a facet of an object (as of a cube)
picture plane
the plane that is in the foreground of a drawing or painting; coextensive with but different from the objective surface of the work
tangent plane
the plane that contains all the lines tangent to a specific point on a surface
pencil
a figure formed by a set of straight lines or light rays meeting at a point
subfigure
a figure that is a part of another figure
bulb
anything with a round shape resembling a teardrop
cylinder
a solid bounded by a cylindrical surface and two parallel planes (the bases)
straight line
a line traced by a point traveling in a constant direction; a line of zero curvature
geodesic,
geodesic line
(mathematics) the shortest line between two points on a surface, such as a straight line on a plane or an arc of a great circle on a sphere
disc,
disk,
saucer
something with a round shape resembling a flat circular plate
parallel
(mathematics) one of a set of parallel geometric figures (parallel lines or planes)
polyhedron
a solid figure bounded by plane polygons or faces
buckle,
warp
a shape distorted by twisting or folding
gnarl,
knot
something twisted and tight and swollen
jog
a sharp change in direction
zag,
zig,
zigzag
an angular shape characterized by sharp turns in alternating directions
sphere
a three-dimensional closed surface such that every point on the surface is equidistant from the center
sphere
a solid figure bounded by a spherical surface (including the space it encloses)
cylinder
a surface generated by rotating a parallel line around a fixed line
toroid,
torus
a ring-shaped surface generated by rotating a circle around an axis that does not intersect the circle
toroid
the doughnut-shaped object enclosed by a torus
columella
a small column (or structure resembling a column) that is a part of a plant or animal
hoodoo
(geology) a column of weathered and unusually shaped rock
rim
the shape of a raised edge of a more or less circular object
blob
an indistinct shapeless form
space
an empty area (usually bounded in some way between things)
node
a connecting point at which several lines come together
block,
cube
a three-dimensional shape with six square or rectangular sides
ovoid
an egg-shaped object
frustum
a truncated cone or pyramid; the part that is left when a cone or pyramid is cut by a plane parallel to the base and the apical part is removed
tendril
something long, light, slender, and often curling
segment
the part of a line between any two points