Chris Pro Homework 1.2 part 2

//Chris Pro Assignment 1.2

//window size
size(400,400);

//top left red square
fill(255,0,0);
rect(0,0,200,200);

//top right green square
fill(0,255,0);
rect(200,0,200,200);

//bottom left blue square
fill(0,0,255);
rect(0,200,200,200);

//bottom right grey square
fill(125);
rect(200,200,200,200);

//centered transparent circle with black outline
fill(255,255,255,200);
stroke(0);
strokeWeight(4);
ellipse(200,200,100,100);