Tanisha Pal Singh
20 Feb 2019
The tangent line to a plane circle at a given point is the straight line that “just touches” the circle at that point. As it passes through the point where the tangent line and the circle meet is called point of tangency.
In the picture above, line L is tangent to the circle with centre O. The point of tangency is point P.
Tanisha Singh Geometry Blog 