User talk:66.207.21.44

September 2010
Welcome to Wikipedia. The recent edit you made to Convex and concave polygons has been reverted, as it appears to have removed content from the page without explanation. Use the sandbox for testing; if you believe the edit was constructive, please ensure that you provide an informative edit summary. You may also wish to read the introduction to editing. Thank you. -- Rrburke (talk) 01:16, 30 September 2010 (UTC)