This is a Unit bundle of lessons/notes, likely for a High School geometry class, that are in the form of handouts. Introductory geometry definitions (many related to triangles) are explored in the first two lessons. The major lessons in this unit are on the Sum of the Interior Angles of a Triangle (including isosceles triangles), the Exterior Angle Theorem, the Pythagorean Theorem (many problems involve simplifying of radicals), Angle/Side Relationships in Triangles, Triangle Inequalities, and the Measures of Interior and Exterior Angles of Polygons (pentagons, hexagons, etc). A mid-unit Quiz and cumulative Unit Exam are included, as well as a Unit study guide that can be given to students. I use these lessons in my own classroom and they work very well.