Nouns denoting two and three dimensional shapes
- inclination of an orbit
- (astronomy) the angle between the plane of the orbit and the plane of the ecliptic stated in degrees
- variation
- the angle (at a particular location) between magnetic north and true north
- buckle
- a shape distorted by twisting or folding
- extrados
- the exterior curve of an arch
- asterism
- (mineralogy) a star-shaped figure with six rays that is seen in some crystal structures under reflected or transmitted light
- equator
- a circle dividing a sphere or other surface into two usually equal and symmetrical parts
- angular distance
- the angular separation between two objects as perceived by an observer
- dewdrop
- a drop of dew
- AZ
- the azimuth of a celestial body is the angle between the vertical plane containing it and the plane of the meridian
- spherule
- a small sphere
- zig
- an angular shape characterized by sharp turns in alternating directions
- drum
- a bulging cylindrical shape; hollow with flat ends
- node
- any thickened enlargement
- quadrangular prism
- a prism whose bases are quadrangles
- geodesic
- (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)
- sphere
- a solid figure bounded by a spherical surface (including the space it encloses)
- spherical triangle
- a spherical polygon formed by the arcs of 3 great circles
- knife
- any long thin projection that is transient
- envelope
- a curve that is tangent to each of a family of curves
- 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
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