This geometry video tutorial provides a basic introduction into parallelograms. It explains the properties of parallelograms and how to use it calculate the missing sides and missing angles of parallelograms. It contains plenty of examples and practice problems for you to work on. Opposite sides of a parallelogram are parallel and congruent. The diagonals bisect each other into congruent segments. Opposite angles are congruent and same side interior angles are supplementary. Polygons: https://www.youtube.com/watch?v=E_-3ulbtcLk Angles of Regular Polygons: https://www.youtube.com/watch?v=OEzEo4XqzJQ Quadrilaterals: https://www.youtube.com/watch?v=ogcH3eM5beM Rectangles - Special Quadrilaterals: https://www.youtube.com/watch?v=Ov4aTty67A8 Isosceles Trapezoids: https://www.youtube.com/watch?v=AlyWS8bG3kE _________________________________ The Rhombus: https://www.youtube.com/watch?v=uXo_Vpctmrg Kites: https://www.youtube.com/watch?v=UTgF6lSAMa8 Proving Parallelograms: https://www.youtube.com/watch?v=MQJnPfNb2Og Proving a Quadrilateral Is a Kite: https://www.youtube.com/watch?v=dh8vRzTNVBg Proving a Quadrilateral Is a Rhombus: https://www.youtube.com/watch?v=EtoP5G98sok __________________________________ Proving Isosceles Trapezoids: https://www.youtube.com/watch?v=EvTHRcNBAc8 2 Column Proofs - Quadrilateral: https://www.youtube.com/watch?v=m8BlpR7xhiM Skew Lines: https://www.youtube.com/watch?v=cemF45vNOhg Points, Lines, Planes, & Segments: https://www.youtube.com/watch?v=dDWjhRfBsKM _______________________________________ Final Exams and Video Playlists: https://www.video-tutor.net/ Full-Length Videos and Worksheets: https://www.patreon.com/MathScienceTutor/collections