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Arc (geometry)
In
Euclidean geometry
, an
arc
(symbol:
⌒
) is a
closed
segment of a
differentiable
curve
. A common example in the
plane
(a
two-dimensional manifold
), is a segment of a
circle
called a
circular arc
. In space, if the arc is part of a
great circle
(or
great ellipse
), it is called a
great arc
.
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