 |
|
| A B C D E F G H I J K L M N O P Q R S T U V W X Y Z |
|
|
four coins problem
Given three coins of possibly different sizes, which are arranged so that each is tangent to the other two, find the coin that is tangent to the other three coins. The solution is the inner Soddy circle.
Related categories
• GAMES AND PUZZLES
• GEOMETRY
Also on this site:
Encyclopedia of Alternative Energy & Sustainable Living
Encyclopedia of History
Transport Concepts & Designs (partner site)