From Latin: intercipere "take or seize between"
Definition: That part of a
that lies between two lines that
Drag one of the orange dots that control the
The red arc is the arc intercepted by that angle.
When two straight lines cross a circle, the part of the circle between the
points is called the intercepted arc.
The lines intercept, or 'cut off', the arc.
Usually the two lines are the arms of an angle, as in the figure above, but this is not always the case.
For example, in the figure at right, two
lines cut off, or intercept, two arcs, AB and CD.
Other circle topics
Equations of a circle
Angles in a circle
(C) 2011 Copyright Math Open Reference. All rights reserved