Arc

Definition of Arc

An Arc is a curved line that is a part of a circle.

An Arc is a part of the circumference of a circle.

More About Arc

  • An arc of measure greater than 180 degrees is a major arc.
    • example of Arc
    Arc LMN is a major arc, as the measure of arc LMN is greater than 1800.
  • An arc of measure less than 180 degrees is a minor arc.
    • example of Arc
    Arc DEF is a minor arc, as the measure of arc DEF is less than 1800.
  • The arc length(L) of a circle of radius r and subtending an angle θ with the center of the circleis given as L = rθ.

Examples of Arc

      example of Arc
  • ACB and ADB are the two arcs in the given figure.

Video Examples: Maths - Shapes and Geometry - Circle Arc and Sector


Solved Example Clockple on Approximate

Ques:

Which of the following lies on the circumference of a circle?

    Choices:
    A. radius
    B. arc
    C. centre
    D. diameter
    Correct Answer: B

Solution:

    Step 1: An Arc is a part of the circumference of a circle.
    Step 2: So, an arc lies on the circumference of a circle.
Translate :

Please provide your email for a free trial as a Teacher or Student. This trial will be valid for the current academic year (2015-16). An email to this address includes the password to login to the full web application. You will also receive other promotional emails as and when such deals become available.

I am a Teacher Student