Nouns denoting two and three dimensional shapes
- facet plane
- the plane of a facet of an object (as of a cube)
- perpendicular
- a straight line at right angles to another line
- chord
- a straight line connecting two points on a curve
- AZ
- the azimuth of a celestial body is the angle between the vertical plane containing it and the plane of the meridian
- acute angle
- an angle less than 90 degrees but more than 0 degrees
- rhombohedron
- a parallelepiped bounded by six similar faces (either rhombuses or parallelograms)
- fissure
- a long narrow depression in a surface
- pyramid
- a polyhedron having a polygonal base and triangular sides with a common vertex
- angle of refraction
- the angle between a refracted ray and a line perpendicular to the surface between the two media at the point of refraction
- perigon
- an angle of 360 degrees
- leaf shape
- any of the various shape that leaves of plants can assume
- keel
- a projection or ridge that suggests a keel
- prismoid
- a prismatoid whose bases are polygons having the same number of sides and whose other faces are trapezoids or parallelograms
- polyhedron
- a solid figure bounded by plane polygons or faces
- wart
- any small rounded protuberance (as on certain plants or animals)
- dodecahedron
- any polyhedron having twelve plane faces
- geodesic line
- (mathematics) the shortest line between two points on a mathematically defined surface (as a straight line on a plane or an arc of a great circle on a sphere)
- base
- the bottom side of a geometric figure from which the altitude can be constructed
- point
- a very small circular shape
- bifurcation
- the place where something divides into two branches
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