27.1 From Numbers to Quantities That Carry a Direction
Point 4 of 5
27.1.4 Equal Vectors and Collinear Vectors
Core idea
If you can slide one arrow onto another so they coincide perfectly, they're equal; and if their directions are the same or exactly opposite, they're collinear (parallel), a∥b.
Module goal. Building on the kind of number from sequences that has only size, introduce vectors, which have both size and direction, and set up the basic ideas and how to draw them.
eastmath.com · 27.1 From Numbers to Quantities That Carry a Direction · 27.1.4 Equal Vectors and Collinear Vectors