Can be a noun. For example, the rainbow is shaped like an arc.
adverb
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An arc
An arc
A segment is a part of a line. An arc is a part of a circle.
Part of the circumference of a circle is called an arc
An arc is a part of the circumference of a circle.
A second of arc.
An arc is a part of the circumference of a circle
Part of the circumference of a circle is called an arc.
The measure of an arc is part of the circumference of a circle
An arc is part of the circumference of a circle
An arc is part of the circumference of a circle.
An 'arc' is part of the circumference of a circle.