geometrical shape

P5.js, form, Law of Continuity
Six lines, three triangles or one square?
function setup() {
  var canvas = createCanvas(500, 500);
  canvas.parent('sketch');
  colorMode(HSB);
  background(98);

  stroke(15);
  strokeWeight(2);
  noFill();
  rectMode(CENTER);
  rect(width / 2, height / 2, width / 3, height / 3);
  line(width / 3, 2 * height / 3, 2 * width / 3, height / 3);
  line(width / 3, width / 3, width / 2, height / 2);
}