Nouns denoting two and three dimensional shapes
- frustum
- a truncated cone or pyramid; the part that is left when a cone or pyramid is cut by a plane parallel to the base and the apical part is removed
- prolate cycloid
- a cycloid generated by a point outside the rolling circle
- chokepoint
- a narrowing that reduces the flow through a channel
- prismatoid
- a polyhedron whose vertices all lie in one or the other of two parallel planes; the faces that lie in those planes are the bases of the prismatoid
- magnetic inclination
- (physics) the angle that a magnetic needle makes with the plane of the horizon
- bend
- an angular or rounded shape made by folding
- line
- a length (straight or curved) without breadth or thickness; the trace of a moving point
- verticil
- a whorl of leaves growing around a stem
- cycloid
- a line generated by a point on a circle rolling along a straight line
- hyperboloid
- a quadric surface generated by rotating a hyperbola around its main axis
- reentrant angle
- an interior angle of a polygon that is greater than 180 degrees
- sphere
- a three-dimensional closed surface such that every point on the surface is equidistant from the center
- parallelogram
- a quadrilateral whose opposite sides are both parallel and equal in length
- prismoid
- a prismatoid whose bases are polygons having the same number of sides and whose other faces are trapezoids or parallelograms
- projection
- any solid convex shape that juts out from something
- prism
- a polyhedron with two congruent and parallel faces (the bases) and whose lateral faces are parallelograms
- mogul
- a bump on a ski slope
- lead
- the angle between the direction a gun is aimed and the position of a moving target (correcting for the flight time of the missile)
- quadrate
- a cubelike object
- isosceles triangle
- a triangle with two equal sides
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