Wikipedia
From AoPSWiki
Wikipedia is the world's largest online wiki. As its name implies, Wikipedia functions primarily as an encyclopedia of knowledge.
| Looking for a challenging geometry text? Preparing for MATHCOUNTS or the AMC exams? Check out Art of Problem Solving's Introduction to Geometry by Richard Rusczyk. |
Wikipedia is the world's largest online wiki. As its name implies, Wikipedia functions primarily as an encyclopedia of knowledge.

