In images 2 and 3, the spectator is located directly above the figure. What he sees would be the body in perspective; the head on first plane, the shoulders on a second plane hiding most of its body. Basically, in a perspective look, images are angled in and look "shortened" to the eye of the beholder.
If it's difficult for you to see this, you can use the mannequin in image 1. Move it around to help you find more perspective points for you to practice. In this pose, for example, both the left forearm and thigh would be seen on perspective; they would seem shorter that their right counterparts.