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First of all to correct your English grammar. Any noun, 'arc' in this case, that starts with a vowel , 'a' in this case, is preceded by the indefinite article 'an' , NOT 'a' .
So the question should read 'What is an arc of a circle?'
Answer: An arc is a section of the circumference , between two given points on the circumference.
Arc as given above.
Radius ; distance from circle centre to the circumference
Diameter ; Straight line distance from the circumfewrence, through the centre to the circumference on the opposite side.
Chord ; (Pronounced ; cord/kord). A straight line between any two points on the circumference, that does NOT touch the centre.
Sector ; The fraction of a circles area enclosed between two radii and the corresponding arc.
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Is a circle an arc?
an arc is a segment of a circle. If the arc subtends a full angle of 360 degrees, then the arc is a circle; but this is a special case of an arc.
What is the relation between arc and circle?
An arc is a part of the circumference of a circle.
What does an arc look like in circle geometry?
An arc is just part of the circumference of a circle.
What is an arc of a circle whose endpoints are endpoints of the diameter of the circle called?
It is a semicircular arc.
How to find a sector area in a circle if you have only the arc length?
If you have the arc length:where:L is the arc length.R is the radius of the circle of which the sector is part.
