i have to creat TINs for a specific areas so the original points or countours are exactly whithin the geographical limits of the area, but when i generate TIN it goes out of those limits and its normal based on the principle of triangulation but is there anyway to gard the same shape and limits after creating a TIN ? right now im using "paint" to clean the mess so please help me :) thanks
Create a polygon of your area of interest. When you create the TIN use this polygon as Clip Polygon. More information in section "Polygon surface feature types" in ArcGIS help.