## Welcome to BrainDen.com - Brain Teasers Forum

Welcome to BrainDen.com - Brain Teasers Forum. Like most online communities you must register to post in our community, but don't worry this is a simple free process. To be a part of BrainDen Forums you may create a new account or sign in if you already have an account. As a member you could start new topics, reply to others, subscribe to topics/forums to get automatic updates, get your own profile and make new friends. Of course, you can also enjoy our collection of amazing optical illusions and cool math games. If you like our site, you may support us by simply clicking Google "+1" or Facebook "Like" buttons at the top. If you have a website, we would appreciate a little link to BrainDen. Thanks and enjoy the Den :-) |

Guest Message by DevFuse

# Kissing Circles

Started by BMAD, May 10 2013 07:19 PM

2 replies to this topic

### #1

Posted 10 May 2013 - 07:19 PM

Inside an orange unit circle we fit two blue circles of radius 1/2. A yellow circle is tangent to the two blue circles and the inner edge of the orange circle. A green circle inside the orange circle is tangent to one of the blue circles, the yellow circle, and the orange circle. If the orange circle is centered at (0,0) what are the coordinates for the centers of the other four circles? The blue ones should be easy.

Presume the circles are placed in the circle as shown in the picture.

### #2

Posted 12 May 2013 - 02:19 AM

Spoiler for hint1

### #3

Posted 12 May 2013 - 06:29 AM Best Answer

Spoiler for Looks like

*Vidi vici veni.*

#### 0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users