
Related Pages:
 Circles forumula, graph, equations
 Equation of A Circle
 Circumference
 Area
 Chord
 Tangent
 Arc of A Circle
 Intersecting Chords
 Inscribed Angle
 Secant of circle
 2 Tangents from 1 point
 Central Angle
 Angles, Arc, Secants, tangents
 Tangents, Secants and Side Lengths
 Tangent and a Chord
 images
An arc is a part or a portion of a circle.
Intercepted Arc
An intercepted arc is created when segments(chords,secants,etc..) intersect a part of the circle. These segments in effect 'intercept' parts of the circle. The picture below shows examples of intercepted arcs.
Note: The examples below use chords to create the intercepted arc. However, tangents, secants can also create intercepted arcs.
You can think of the intercepted arc as the crust in a piece pizza.
Answer
The measure of an arc = the measure of its central angle.
Therefore the measure of =85
The measure of =360° −85°=275°