FABULOUS Perimeter Formulas for practicing and figuring Perimeter of Squares, Rectangles, Triangles, Compound Shapes, Finding missing measures of sides, etc. SMARTBOARD Slides LESSON. WONDERFUL VALUE = 34 slides total, complete lesson on Perimeter. Interactive practice for your students. Everything you need to teach Perimeter! You'll enjoy using this year after year! WARNING: You MUST have SMART Technologies SMART software, and a SMARTBOARD to teach from, to effectively download, open and use th