Radius, Diameter and Chord
Any line passing through the circle can be categorized into three categories,
- Secant to Circle
- Tangent to Circle
- Non-Intersecting Line
Secant to Circle
If a line touches the circle exactly two times then it is called Intersecting line. It is also called Secant to the circle.
Tangent to Circle
If a line touches the circle exactly one time then it is called a tangent to the circle.
Non-Intersecting Lines
If a line does not touch the circle then it is called Non-Intersecting Line.
- Any line segment joining the centre of the circle to its circumference is called its radius.
- A line segment joining two points on the circumference of the circle is called a chord of the circle.
- The chord passing through the centre of the circle is called the diameter of the circle which is the longest chord of the circle.
Radius of Circle
Radius of Circle: The radius of a circle is the distance from the circle’s center to any point on its circumference. It is commonly represented by ‘R’ or ‘r’. The radius is crucial in nearly all circle-related formulas, as the area and circumference of a circle are also calculated using the radius.
In this article, we are going to learn about the Radius of the Circle in detail, including its Formula, Equation, and How to Find it with the help of Examples.
Table of Content
- What is the Radius of Circle?
- Radius of a Circle Definition
- Diameter of Circle
- Radius, Diameter and Chord
- Secant to Circle
- Tangent to Circle
- Non-Intersecting Lines
- Radius Formula
- How to Find Radius of Circle?
- Radius of Sphere
- Radius of Circle Equation
- Chord of Circle Theorems
- Radius of Circle Examples
- Practice Questions on Radius of Circle