Download presentation

Presentation is loading. Please wait.

Published byLillie Noyes Modified over 2 years ago

1
9 – 2 Tangent

2
Tangents and Circles Theorem 9 – 1 If a line is tangent to a circle, then the line is perpendicular to the radius drawn to the point of tangency. ZT O m Given m is tangent to O at T then OT m

3
Tangents and circles Corollary Tangents to a circle from a point are congruent. A B P In the figure PA and PB are tangent to the circle at A and B. By the corollary, PA = PB

4
Tangents and Circles Theorem 9 – 2 If a line in the plane of a circle is perpendicular to a radius at its outer endpoint, then the line is tangent to the circle R Q l Given: Line l is in the plane of Q l radius QR at R. Then l is tangent to Q

5
Tangents and Circles When each side of a polygon is tangent to a circle, the polygon is said to be circumscribed about the circle and the circle is inscribed in the polygon.

6
Tangents and Circles A line that is tangent to each of two coplaner circles is called a common tangent. A common internal tangent intersects the segments joining the centers. A B AB is a common internal tangent

7
Tangents and Circles A common external tangent does not intersect the segment the segment joining the centers R S RS is a common external tangent

8
Tangents and Circles A circle can be tangent to a line but it can also be tangent to another circle. Tangent circles are coplaner circles that are tangent to the same circle. Externally tangent circles Internally tangent circles

Similar presentations

Presentation is loading. Please wait....

OK

Circles Chapter 12.

Circles Chapter 12.

© 2017 SlidePlayer.com Inc.

All rights reserved.

Ads by Google

Animated ppt on magnetism facts Ppt on business etiquettes training programs Ppt on bharatiya janata party Ppt on go green Ppt on forest conservation in india Ppt on chapter 3 atoms and molecules worksheet Ppt on file system management Ppt on railway track security system Ppt on total hip replacement Ppt on financial markets and institutions