Subject Mathematics

Topic Geometry - Circles

clickto share

#### My Profile

My Profile [view full profile]

why create a profile on shaalaa.com?

1. Inform you about time table of exam.

2. Inform you about new question papers.

3. New video tutorials information.

1. Inform you about time table of exam.

2. Inform you about new question papers.

3. New video tutorials information.

### Video Series

#### shaalaa.com | Circles part 1 (Introduction)

#### Series 1: playing of 7

to track your progress

Circles

0%

Circles part 1 (Introduction)

00:13:10

00:13:10

Circles part 2 (Theorems Tangent Secant)

00:10:01

00:10:01

Circles part 3 (Theorems Tangent Secant)

00:10:36

00:10:36

Circles part 4 (Examples Tangent Secant)

00:07:49

00:07:49

Circles part 5 (Examples Tangent Secant)

00:10:54

00:10:54

Circles part 6 (Examples Tangent Secant)

00:11:33

00:11:33

Circles part 7 (Examples Tangent Secant)

00:11:05

00:11:05

clickto share

### Feedback

### Submit video link for this topic

(if you have any topic related video then share link with us)### Description

Tangent to a circle at, point of contact

- (Prove) The tangent at any point of a circle is perpendicular to the radius through the point of contact.
- (Prove) The lengths of tangents drawn from an external point to a circle are equal.