No, it's a chord. The area between a chord and the circumference is a segment.
A segment between two points on a circle is
A line segment that intersects with or joins two points on a circle is called a chord.
A chord
chord
A chord
It is the circle's diameter
a chord of the circle
Only round the perimeter of the circle (not across its interior) because a segment is a part of a line or curve between two points.
The line segment that connects any two points on a circle is called a chord. If you connect three points on the circle, the segments connecting them form a triangle inscribed within the circle, known as a cyclic triangle. The longest chord of a circle is the diameter, which connects two points on the circle and passes through its center.
A chord is a line which connects two points which lie on a circle.
a chord.
a chord