A segment is a part of a line. An arc is a part of a circle.
Arc
circular arc is a segment of the circumference of a circle
arc
an arc is a segment of a circle. If the arc subtends a full angle of 360 degrees, then the arc is a circle; but this is a special case of an arc.
The segment is called a secant.The area bounded by a secant and its arc is a sector.
A segment is the area within a circle enclosed by an arc and a chord
A segment of a circle is known as an arc.A segment of a circle is called a arc.A segment of a circle is known as an arc.
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An arc is an unspecified segment of a circle. I perferred the second segment of the presentation.
Take a compass, extend it about 3/4 of the length of the segment. Then from one end of the segment, draw a 180 degree arc. From the other end draw another arc. Connect the points where the arcs intersect. Where the line intersects with the segment is the midpoint of the segment. That is how you bisect a segment to find the midpoint - geometrically.
Adjust a compass so the distance between the point and the pencil is more than half of the length of the segment. With the point at one end of the segment draw an arc that intersects the segment. Without adjusting the compass, with the point at the other end of the segment draw an arc that intersects the first arc at two places. The line that includes those two intersecting points is the perpendicular bisector.
An arc is a part of a circle that is defined by its endpoints. It is a segment of the circumference of the circle.