def setup
  background(220)
  strokeWeight(5)
  point(84, 91)
  point(68, 19)
  point(21, 17)
  point(32, 91)
  strokeWeight(1)

  noFill
  beginShape
  curveVertex(84, 91)
  curveVertex(84, 91)
  curveVertex(68, 19)
  curveVertex(21, 17)
  curveVertex(32, 91)
  curveVertex(32, 91)
  endShape
end