Hi, I'm a mathematics analphabet, but still, sometimes I come across a problem, that I just can't keep away from. I hope someone finds this one worth a thought. Here it is: An observer is looking at a long object with marks spaced equally along its length (like a measuring rod or a check-board). The distance between the marks (or sizes of colored fields) is not given. So is not the distance from the observer. What is known, are all the angles between the marks from the observers standing point. My question is, is it possible to determine the angle of the "long object" in respect to the observers location given only the mentioned angles?