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
a connecting shape
a nine-sided polygon
a very small circular shape
a shape that sags
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
(mathematics) a straight line extending from a point
(geometry) a straight line connecting any two vertices of a polygon that are not adjacent
oblique triangle
a triangle that contains no right angle
a bifurcating branch (one or both of them)
an egg-shaped object
a plane figure bounded by two radii and the included arc of a circle
(mathematics) an unbounded two-dimensional shape
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