Points, Lines, Planes, Segments, & Rays - Collinear vs Coplanar Points - Geometry

This geometry video tutorial provides a basic introduction into points, lines, segments, rays, and planes. It explains how to identify three collinear points and how to distinguish it from noncollinear points. It explains the difference between coplanar points and noncoplanar points. Three points are collinear if they lie on the same line. This video describes the four ways to determine a plane: 1. Three noncollinear points determine a plane. 2. Two parallel lines determine a plane. 3. Two intersecting lines determine a plane. 4. A point and a line can also determine it. This video also explains how to identify coplanar lines and noncoplanar lines and segments. It contains plenty of examples and practice problems. Polygons: https://www.youtube.com/watch?v=E_-3ulbtcLk Quadrilaterals: https://www.youtube.com/watch?v=ogcH3eM5beM Skew Lines: https://www.youtube.com/watch?v=cemF45vNOhg Triangles - Basic Introduction: https://www.youtube.com/watch?v=q7vI2oXL0gQ Number of a Diagonals In a Polygon: https://www.youtube.com/watch?v=jZYL2TUrYSw ___________________________________ Ratios and Proportions - Means Extreme: https://www.youtube.com/watch?v=tFCrFa0mDi4 Similar Triangles: https://www.youtube.com/watch?v=YiFwvAFk-xs Similar Triangles - Enlargement Ratios: https://www.youtube.com/watch?v=r7m424e3Kdc Triangle Similarity - SSS, SAS, & AAA: https://www.youtube.com/watch?v=VXlFEilh-cw Triangle Proportionality Theorem: https://www.youtube.com/watch?v=EQpguitDfGU Altitude on Hypotenuse Theorem: https://www.youtube.com/watch?v=RiTp3vyWe0o ___________________________________ Pythagorean Theorem: https://www.youtube.com/watch?v=d8EA5TxGzcY The Distance Formula: https://www.youtube.com/watch?v=YDvUy5VYm9E Distance Between 2 Points - 3D: https://www.youtube.com/watch?v=0c6cP2zLC2c Final Exams and Video Playlists: https://www.video-tutor.net/ Full-Length Videos and Worksheets: https://www.patreon.com/MathScienceTutor/collections