Determining when three lengths make a Triangle Worksheet, "Is it a Triangle?" that is a GREAT practice worksheet for after students have learned the Inequality Rule of Triangles. Students are given three measurements, and asked to decide if those 3 can actually make a Triangle. If yes, they are asked to classify the type of Triangle, based on it's sides. Your students will love this practice worksheet. Thanks for purchasing, and please checkout my TPT Store for lots of super Smartboard lessons, activities, and worksheets.