Nouns denoting two and three dimensional shapes
- reflex angle
- an angle greater than 180 degrees (but less than 360)
- leaf shape
- any of the various shape that leaves of plants can assume
- acute angle
- an angle less than 90 degrees but more than 0 degrees
- convex polygon
- a polygon such that no side extended cuts any other side or vertex; it can be cut by a straight line in at most two points
- orbital plane
- (astronomy) the plane on which a body is orbiting
- convex polyhedron
- a polyhedron any plane section of which is a convex polygon
- element of a cylinder
- a straight line running the length of the cylinder
- connection
- a connecting shape
- nonagon
- a nine-sided polygon
- point
- a very small circular shape
- sag
- a shape that sags
- curve
- the trace of a point whose direction of motion changes
- oblique angle
- an angle that is not a right angle or a multiple of a right angle
- ray
- (mathematics) a straight line extending from a point
- diagonal
- (geometry) a straight line connecting any two vertices of a polygon that are not adjacent
- oblique triangle
- a triangle that contains no right angle
- bifurcation
- a bifurcating branch (one or both of them)
- ovoid
- an egg-shaped object
- sector
- a plane figure bounded by two radii and the included arc of a circle
- plane
- (mathematics) an unbounded two-dimensional shape
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