Math Doubts

Secant of a Circle

A straight line that intersects a circle at any two points is called the secant line to a circle.


secant of a circle

The straight lines are often intersect the circles for some reasons in geometric mathematics. In some cases, the straight lines enter into the interior of the circles. In this case, a straight line can possibly intersect any circle at a maximum of two different points and the straight line is called the secant line to a circle.

When a straight line intersects a circle at two distinct points, the two points of the secant line lie on the circle.


example of secant of a circle

$P$ and $Q$ are any two points on the circumference of a circle.

$\overleftrightarrow{FG}$ is a straight line and it intersects the circle at two points $P$ and $Q$. So, the straight line $\overleftrightarrow{FG}$ is known as a secant of the circle at points $P$ and $Q$.

Math Doubts
Math Doubts is a free math tutor for helping students to learn mathematics online from basics to advanced scientific level for teachers to improve their teaching skill and for researchers to share their research projects. Know more
Follow us on Social Media
Math Problems

Learn how to solve easy to difficult mathematics problems of all topics in various methods with step by step process and also maths questions for practising.

Learn more