This geometry video tutorial provides a basic introduction into the properties of special quadrilaterals and parallelograms such as rectangles. It explains how to determine the length of an unknown segment as well as the diagonal length of a rectangle. It contains plenty of examples and practice problems. Opposite sides of rectangles are parallel and congruent just like a parallelogram. the diagonals are equal and they bisect each other. All angles of a rectangle are right angles. 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 Parallelograms: https://www.youtube.com/watch?v=t42sLuns4Qs 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