I have a picture of a section of a rectangular prism taken at an angle so that it isn't facing parallel with the camera like below. The end of the prism is cut off by the photo, and I have a scale for the photo (Example : $1$ pixel/micrometer).
My question: Is it possible to find the width of the box from the picture and scale even though it is at an angle? There are no shadows or additional info in the picture.
