void setup() {
  size(200,200);
  background(255);
  
  pushMatrix();
  translate(50, 150);  // move origin to (50,150)
  scale(3);            // will create person of width 30
  person();
  popMatrix();
  
  pushMatrix();
  translate(100, 180); // move origin to (100,180)
  scale(2);            // will create person of width 20
  person();
  popMatrix();

  pushMatrix();
  translate(150, 150); // move origin to (150,150)
  scale(3);            // will create person of width 30
  person();
  popMatrix();
}

/*
  Draw a person centered above the origin having width 10.
*/
void person() {
  line(-5, 0, 0, -10);         // left leg
  line(5, 0, 0, -10);          // right leg
  line(0, -10, 0, -20);        // trunk
  line(0, -15, -5, -20);       // left arm
  line(0, -15, 5, -20);        // right arm
  ellipse(0, -25, 10, 10);     // head
}