---
title: 'Vectors'
part: 'Part IV — Randomness and Generative Math'
partNumber: 4
order: 4
subtitle: 'vadd, vnorm, vfromheading, and polar geometry'
---

_Content coming soon._

<Run>{`// Phyllotaxis spiral using vectors
let golden = 137.508
repeat 40 [
  let r = sqrt(repcount) * 4
  let pt = vfromheading(repcount * golden, r)
  up  setpos pt  down
  repeat 6 [ fd 1.5 rt 60 ]
]`}</Run>

<Checkpoint chapterId="ch-26">Chapter content coming soon.</Checkpoint>