Nouns denoting two and three dimensional shapes
- hollow
- a cavity or space in something
- column
- anything that approximates the shape of a column or tower
- spherule
- a small sphere
- diameter
- a straight line connecting the center of a circle with two points on its perimeter (or the center of a sphere with two points on its surface)
- hyperbola
- an open curve formed by a plane that cuts the base of a right circular cone
- spherical polygon
- a figure on the surface of a sphere bounded by arcs of 3 or more great circles
- midline
- the median plane of the body (or some part of the body)
- tesseract
- the four-dimensional analogue of a cube
- 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)
- crookedness
- a tortuous and twisted shape or position
- spherical angle
- an angle formed at the intersection of the arcs of two great circles
- brachium
- (biology) a branching or armlike part of an animal
- striation
- any of a number of tiny parallel grooves such as: the scratches left by a glacier on rocks or the streaks or ridges in muscle tissue
- hypotenuse
- the side of a right triangle opposite the right angle
- toroid
- the doughnut-shaped object enclosed by a torus
- polyhedron
- a solid figure bounded by plane polygons or faces
- radius
- a straight line from the center to the perimeter of a circle (or from the center to the surface of a sphere)
- figure of eight
- a two-dimensionsal figure having the shape of the number eight
- nubble
- a small lump or protuberance
- 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
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