Stage 28 · Solid Geometry & Views
28.5.5 Line-and-Plane, Plane-and-Plane
28.5 Points, Lines, and Planes in Space: How the Three Get Along
Point 5 of 5
28.5.5 Line-and-Plane, Plane-and-Plane
Core ideaA rod and the floor: the line can lie in the plane, cross it, or stay parallel to it, while two planes either meet or run parallel.
Module goal. Build the language and basic facts of spatial position, sorting out how points, lines, and planes intersect or run parallel, to lay the groundwork for judging parallelism and perpendicularity.