Nouns denoting two and three dimensional shapes

helix
a curve that lies on the surface of a cylinder or cone and cuts the element at a constant angle
 
round shape
a shape that is curved and without sharp angles
 
round angle
an angle of 360 degrees
 
tetrahedron
any polyhedron having four plane faces
 
parallelopipedon
a prism whose bases are parallelograms
 
scalene triangle
a triangle with no two sides of equal length
 
nubble
a small lump or protuberance
 
right-angled triangle
a triangle with one right angle
 
AZ
the azimuth of a celestial body is the angle between the vertical plane containing it and the plane of the meridian
 
flank
a subfigure consisting of a side of something
 
keel
a projection or ridge that suggests a keel
 
pentagon
a five-sided polygon
 
bulb
anything with a round shape resembling a teardrop
 
score
a slight surface cut (especially a notch that is made to keep a tally)
 
curtate cycloid
a cycloid generated by a point inside the rolling circle
 
octahedron
any polyhedron having eight plane faces
 
taper
a convex shape that narrows toward a point
 
polygon
a closed plane figure bounded by straight sides
 
acute angle
an angle less than 90 degrees but more than 0 degrees
 
cuneus
any shape that is triangular in cross section
 
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