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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.

Arc LMN is a major arc, as the measure of arc LMN is greater than 180°.

• An arc of measure less than 180 degrees is a minor arc.

Arc DEF is a minor arc, as the measure of arc DEF is less than 180°.

• 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.

Example of Arc

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

Solved Example on Arc

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.

Related Terms for Arc

• Circle
• Circumference
• Curve
• Degree

Additional Links for Arc

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