Segment - GCSE Maths Definition

In mathematics, a segment is part of the area of a circle made from an arc and a chord. Technically, a chord splits a circle into two segments - one large, one small, referred to as the major segment and minor segment. 'Segment' alone usually refers to the smaller. In GCSE Mathematics, you may be required to find the area of a segment, and/or its perimeter and so solve more general geometric problems involving parts of a circle.

The phrase 'line segment' means something different - this is referring to the part of a straight-line graph between two specific points.