Parts of a Circle

A circle is a simple yet fundamental form in geometry, made up of different components that define its structure and characteristics. Here are the essential elements of a circle:

Center: The point on a circle’s perimeter that is equidistant from all other points is known as its centre. It is commonly represented by the letters “O” or “C”.

Radius: The radius of a circle is the distance between the centre and any point along its circumference. It is symbolised by the letter “r”. A circle’s radii are all equal in length.

Diameter: The diameter of a circle is the longest chord that runs through the centre and links two locations on its periphery. It is twice as long as the radius. The letter “d” is commonly used to signify diameter.

Circumference: The circumference of a circle is the distance around its outside edge or boundary. The perimeter of a circle is calculated using the formula C = πd or C = 2πr, where π (pi) is a constant roughly equal to 3.14.

Chord: A chord of a circle is a line segment that links two locations along its circumference. Unlike the diameter, a chord does not always travel through the centre of the circle.

Arc: An arc of a circle is a piece of its circumference. It is defined by two locations on a circle and the continuous curve connecting them. The length of an arc is expressed in linear units.

Sector: A sector of a circle is an area defined by two radii and their accompanying arcs. It looks like a slice of pie or pizza. The area of a sector may be computed using formulae that use the radius and central angle.

Segment: A circle segment is the region defined by an arc and the chord that connects its endpoints. Segments are classified as either major (bigger chunk) or minor (smaller portion).

Understanding these circle components is critical for solving circle-related issues including calculating areas, perimeters, and angles, as well as comprehending geometric relationships and features inside circles.

Circle formulas are basic formulas used in geometry to solve various problems of circles and are used in solving various mathematical and other problems. Before moving with various circle formulas one must familiarise with the basic definition of a circle. “A circle is a basic geometrical shape in which all points on the circumference of the circle are equidistant from the centre of the circle.”

In this article, we will learn about various circle formulas their uses and others in detail.