What are (4) characteristics of an impact pattern made by a blunt force trauma? Naim 08:04 Bloodstain Pattern Analysis What are (4) characteristics of an impact pattern made by a blunt force trauma? 1. 1-4mm drops 2. Elliptoid shape 3. V shape distribution 4. Provide information of relative locations of offender and victim Learn More : Share this Share on FacebookTweet on TwitterPlus on Google+