Posted by **alisa** on Tuesday, November 15, 2011 at 7:49pm.

True or false

Tangent circles always have exactly one common tangent.

- geometry -
**Steve**, Wednesday, November 16, 2011 at 12:32am
False. Draw two tangent circles.

If one is not inside the other, then there is a tangent line that passes between the circles, touching each at the point of tangency.

There are also two lines that lie outside the circles, but lean up against both of them. Those are also common tangents.

If one circle is inside the other, then there is just a single common tangent.

- geometry -
**t**, Thursday, April 11, 2013 at 12:21pm
If the area of a rectangle is 50cm and two circles are inside which are tangent to each other and the rectangle's side. What is the radius?

## Answer this Question

## Related Questions

- Geometry/Trigonometry - Circles with centers (2,1) and (8,9) have radii 1 and 9...
- Geometry - Circles and tangents - Two circles of radius 1 are externally tangent...
- Circles - 2 circles have different radius touch at a point and at the point has ...
- MATHS - two circles c1 and c2 meet at the points A and B. CD is a common tangent...
- math - 1. two circles. x^2+y^2-16x-8y+35=0 and x^2+y^2=5 are given. a. write the...
- GEOMETRY - Two circles with radii a and b touch each other externally . Let c be...
- geometry (high school) - if there are two tangent circles that have two external...
- algebra - Rectangle R is formed by joining the centers of two congruent tangent ...
- Math - circles P and Q are externally tangent at T. Horizontal lines l and m are...
- calculus - if the tangent of two intersecting circles, at their points of ...

More Related Questions