Nouns denoting two and three dimensional shapes
- face angle
- the angle formed by two edges of a polyhedral angle
- toroid
- the doughnut-shaped object enclosed by a torus
- lower bound
- (mathematics) a number equal to or less than any other number in a given set
- prismoid
- a prismatoid whose bases are polygons having the same number of sides and whose other faces are trapezoids or parallelograms
- 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
- diagonal
- (geometry) a straight line connecting any two vertices of a polygon that are not adjacent
- epicycloid
- a line generated by a point on a circle rolling around another circle
- prism
- a polyhedron with two congruent and parallel faces (the bases) and whose lateral faces are parallelograms
- angle
- the space between two lines or planes that intersect; the inclination of one line to another; measured in degrees or radians
- acute triangle
- a triangle whose interior angles are all acute
- inclination
- (astronomy) the angle between the plane of the orbit and the plane of the ecliptic stated in degrees
- pillar
- anything that approximates the shape of a column or tower
- crenature
- one of a series of rounded projections (or the notches between them) formed by curves along an edge (as the edge of a leaf or piece of cloth or the margin of a shell or a shriveled red blood cell observed in a hypertonic solution etc.)
- hyperbola
- an open curve formed by a plane that cuts the base of a right circular cone
- node
- any thickened enlargement
- subfigure
- a figure that is a part of another figure
- angularity
- a shape having one or more sharp angles
- tangent
- a straight line or plane that touches a curve or curved surface at a point but does not intersect it at that point
- fork
- the region of the angle formed by the junction of two branches
- hollow
- a cavity or space in something
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