Stage 28 · Solid Geometry & Views
28.5.1 Describing Points, Lines, and Planes
28.5 Points, Lines, and Planes in Space: How the Three Get Along
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28.5.1 Describing Points, Lines, and Planes
Core ideaA point at the corner of a room, a line where two walls meet, a whole wall as a plane: space is built from these three things.
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.