Nouns denoting two and three dimensional shapes

concave polygon
a polygon such that there is a straight line that cuts it in four or more points
a shape having one or more sharp angles
bell shape
the shape of a bell
the shape of a raised edge of a more or less circular object
a hollow concave shape made by removing something
helix angle
the constant angle at which a helix cuts the elements of a cylinder or cone
something approximating the shape of a triangle
an angular or rounded shape made by folding
the place where something divides into two branches
a polyhedron whose vertices all lie in one or the other of two parallel planes; the faces that lie in those planes are the bases of the prismatoid
a figure that branches from a single root
any of a number of tiny parallel grooves such as: the scratches left by a glacier on rocks or the streaks or ridges in muscle tissue
a shape that is generated by rotating an ellipse around one of its axes
inclination of an orbit
(astronomy) the angle between the plane of the orbit and the plane of the ecliptic stated in degrees
a symmetrical arrangement of the parts of a thing
a three-dimensional closed surface such that every point on the surface is equidistant from the center
line of Saturn
a crease on the palm; palmists say it indicates how successful you will be
angular distance
the angular separation between two objects as perceived by an observer
any small rounded protuberance (as on certain plants or animals)
a depression scratched or carved into a surface
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