Friday, July 17, 2009

A tangent to a circle is perpendicular to the radius at the point of contact.
· A tangent intersects a circle at one point.
· Perpendicular means at right angles (meet at 90degrees).

Video of tangent perpendicular to radius

http://www.youtube.com/watch?v=E2uoEMwuyak


Video of tangent perpendicular to radius and tangents from external point http://www.youtube.com/watch?v=bY3Jsi-tjrk

At the end of this, we have learnt that,
The line drawn perpendicular to the end point of a radius is a tangent to the circle.

Do go home and revise what you have learnt! :)