createCanvas(400, 300);

  noStroke()

​

  fill('skyblue')

  rect(0, 0, width, height)

  fill('green')

  rect(0, height/2, width, height)

  fill('yellow')

  circle(50, 50, 50)

​

  stroke(0)

  strokeWeight(3)

  fill('white')

  rect(200, 100, 100, 100)

  rect(220, 200, 25, -50)

  beginShape()

  vertex(200, 100)

  vertex(250, 50)

  vertex(300, 100)

  endShape(CLOSE)

}

​