Nouns denoting two and three dimensional shapes
- quadrangular prism
- a prism whose bases are quadrangles
- tilt angle
- the angle a rocket makes with the vertical as it curves along its trajectory
- heart
- a plane figure with rounded sides curving inward at the top and intersecting at the bottom; conventionally used on playing cards and valentines
- helix angle
- the constant angle at which a helix cuts the elements of a cylinder or cone
- salient angle
- an angle pointing outward; an interior angle of a polygon that is less than 180 degrees
- dermatoglyphic
- the lines that form patterns on the skin (especially on the fingertips and the palms of the hands and the soles of the feet)
- circlet
- a small circle
- sector
- a plane figure bounded by two radii and the included arc of a circle
- concave polygon
- a polygon such that there is a straight line that cuts it in four or more points
- trapezoid
- a quadrilateral with two parallel sides
- heptagon
- a seven-sided polygon
- element of a cylinder
- a straight line running the length of the cylinder
- ovoid
- an egg-shaped object
- bead
- a shape that is spherical and small
- camber
- a slight convexity (as of the surface of a road)
- rhombohedron
- a parallelepiped bounded by six similar faces (either rhombuses or parallelograms)
- inclination
- (geometry) the angle formed by the x-axis and a given line (measured counterclockwise from the positive half of the x-axis)
- 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)
- hypocycloid
- a line generated by a point on a circle that rolls around inside another circle
- hexahedron
- any polyhedron having six plane faces
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