Nouns denoting two and three dimensional shapes

pyramid
a polyhedron having a polygonal base and triangular sides with a common vertex
 
thickening
any thickened enlargement
 
juncture
the shape or manner in which things come together and a connection is made
 
natural shape
a shape created by natural forces; not man-made
 
pentagon
a five-sided polygon
 
isogon
an equiangular polygon
 
center line
a line that bisects a plane figure
 
zig
an angular shape characterized by sharp turns in alternating directions
 
box
a rectangular drawing
 
angle of inclination
(geometry) the angle formed by the x-axis and a given line (measured counterclockwise from the positive half of the x-axis)
 
disproportion
lack of proportion; imbalance among the parts of something
 
diagonal
(geometry) a straight line connecting any two vertices of a polygon that are not adjacent
 
helix angle
the constant angle at which a helix cuts the elements of a cylinder or cone
 
knot
something twisted and tight and swollen
 
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
 
complex plane
a geometric representation of the complex numbers established by the real axis and the orthogonal imaginary axis; it can be thought of as a modified Cartesian plane, with the real part of a complex number represented by a displacement along the x-axis, and the imaginary part by a displacement along the y-axis
 
reentrant angle
an interior angle of a polygon that is greater than 180 degrees
 
reflex angle
an angle greater than 180 degrees (but less than 360)
 
cuboid
a rectangular parallelepiped
 
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