Definition:Segment of Circle

Base
The base of a segment is the straight line forming one of the boundaries of the seqment.

Angle of a Segment


That is, it is the angle the base makes with the circumference where they meet.

It can also be defined as the angle between the base and the tangent to the circle at the end of the base:


 * AngleOfSegment.png

Angle in a Segment





 * AngleInSegment.png

Such a segment is said to admit the angle specified.