var rectSize = 100;

var triSize = 100;

var padding = 175;

​

function setup() {

    createCanvas(600,400);

    background(255);

​

    //draw shapes with fill color black

    fill(0);

    noStroke();

    //circle

    ellipse(padding, circleSize, circleSize, circleSize);

    //square

    rect(width - padding - rectSize/2, rectSize/2, rectSize, rectSize);

    //triangle

    push();

        translate(padding - triSize/2, height - padding);

        triangle(0, triSize, triSize/2, 0, triSize, triSize);

    pop();

    //quadrilateral

    push();

        translate(width - padding - 60, height - padding);

        quad(0, 10, 120, 0, 100, 70, 20, 100);

    pop();

}