Move the shape of the peaks to create different quads . Is it possible to make a square that is not also a rectangles ? A diamond that is not also a parallelogram ? Why? Drag the vertices to create ...

Today it’s time for another HTML5 online “demo”, it’s called Sketchpad and it’s a painting / drawing application. Go check it out here. You see? It’s got a beautiful Pixelmator-like interface made of ...