Geometry Teachers Never Spend Time Trying to Find Materials for Your Lessons Again! Join Our Geometry Teacher Community Today! http://geometrycoach.com/Geometry-Lesson-Plans/?pa=MOOMOOMATH In this animated video, I would like to talk about the properties of polygons. Polygons are 2-dimensional closed shapes. A closed shape does not have any openings, and all of the lines connect. You can’t leave the inside of a closed shape without crossing a line. Polygons have straight lines and do not h