Great job exploring shapes that are not simple rectangles! Angles other than 90 degrees and sides that are not parallel make these interesting examples. I think you need to make a small adjustment in how you apply the technique in order for this to work. All lines that go to a common vanishing point are parallel. In Marshall's example, he used a rectangle which has two sets of parallel sides and thus he required two vanishing points. In your first example, the top view shows that you don't have any parallel edges, all four edges extend at different angles to the picture plane. This means that the lines through the edges in your perspective projection must each go to a _different_ vanishing point. You can either use four different vanishing points (one for each edge angle, determined just as you did for the red and blue edges) or you can put your shape in a rectangle (or a parallelogram), use the edges of the rectangle to place two vanishing points and then determine the position of your shape inside the rectangle (e.g. by using a grid approach within the rectangle). The same is true for your pentagon shape. None of the edges are parallel so you either need five vanishing points or you need to place the pentagon in a rectangle. Aside: The lines that go through a single vanishing point only intersect at that vanishing point. The vanishing point is on the horizon which is very, very far away and can be thought of as at infinity. Thus the lines never really intersect which means, by definition, they are parallel. Exceptions to this would be the horizon line and a vertical line through the VP, both of which would be in the zone of distortion so I think we can ignore them.

These are so satisfying to look at. I love how you’ve laid out the pages. Well done 👍

Excellent work adapting the assignment to your comfort level. This is looking really good!

Hello, I'll give my 2 cents. Many of these techniques are going to be happening at the same time, but what distinguishes Foreshortening is the change of shape. I've attached an image here that I'll refer to, to help explain. So if we take the shape of a hand and turn it down to face us that is Foreshortening (see 1). The shape of the hand has changed into something less recognizable and it has gotten much shorter (hence the name Foreshortening). Because the hand is attached to the arm, when we turn the hand to face the viewer it will almost always overlap with the forearm (see 2). But depending on how close we are to the hand (or how close the camera is), we may not see much or any diminution or convergence. If we tilt the arm down slightly (see 3) you can see this better. Once we get close to the hand (see 4), diminution and convergence come into play. By combining all the techniques we get a much better illusion of depth. So what determines a "change of shape", I think that depends on the frame of reference. So for us humans most things stand tall and straight, so when they tilt towards us they become shorter. Hands are more recognizable when we can see the whole palm and all the fingers. A person is more recognizable standing straight (see 5) as opposed to from a top view. If we were birds the top view would be more recognizable and we might call this technique of objects tilting and changing their shape: forelengthening. I hope this helps.