Stage 29 · Spatial Vectors & Solid Geometry
29.1.2 Adding and Subtracting Spatial Vectors
29.1 From Plane Vectors into Space — Spatial Vectors and Linear Operations
Point 2 of 6
29.1.2 Adding and Subtracting Spatial Vectors
Core ideaWalk along one edge then another, tip to tail, and the combined journey is a+b — the parallelogram rule still works just fine.
Module goal. Carry the familiar arrow of a plane vector into three dimensions, build up addition, subtraction, scalar multiplication, and tests for collinear and coplanar vectors in space, picking up where the last stage's feel for solid shapes left off.