This geometry video tutorial provides a basic introduction into perpendicular lines, slope, rays, line segments and right angles. Perpendicular lines have slopes that are negative reciprocals of each other. Perpendicular Lines, Rays, and Line Segments intersect each other at right angles or at 90 degrees. This video contains plenty of examples and practice problems. Geometry Introduction: https://www.youtube.com/watch?v=302eJ3TzJQU Lines, Rays, Line Segments, & Angles: https://www.youtube.com/watch?v=oeO8f0taQDA Acute, Obtuse, Right, & Straight Angles: https://www.youtube.com/watch?v=VjRXfemAbuc Decimal Degrees to DMS Formula: https://www.youtube.com/watch?v=W9kousU6AI0 Clock to Angle Problems: https://www.youtube.com/watch?v=LEHYr0XfSyI Angle Bisector Theorem - Midpoints: https://www.youtube.com/watch?v=2I7ghedeoec ___________________________________ Converse, Inverse, & Contrapositive: https://www.youtube.com/watch?v=TCBu8PD4Lls Geometry Probability - Length & Area: https://www.youtube.com/watch?v=DeH5aHWxEaI Perpendicular Lines, Rays, & Segments: https://www.youtube.com/watch?v=-QFNMEnfRQA Complementary & Supplementary Angles: https://www.youtube.com/watch?v=MKgsObfVHmk Addition & Subtraction Equality Property: https://www.youtube.com/watch?v=RslDIFh_kG8 _______________________________________ Final Exams and Video Playlists: https://www.video-tutor.net/ Full-Length Videos and Worksheets: https://www.patreon.com/MathScienceTutor/collections