____________ is made with a camera depression angle of about 60 degree. 

The principle of __________ are applied to obtain qualitative information from the aerial photographs. 

________ does not show horizon. 

The image projected by a lens is treated like a ____________. 

The principles used in ___________ facilitate precise measurements related to the length, breadth and height from photographs. 

On the basis of the position of the camera axis, aerial photographs are classified into _________.  

____________ is the science and technology of taking reliable measurements from aerial photographs. 

__________ resembles the view a pilot sees when approaching the target. 

___________ is an art of identifying images of objects and judging their relative significance. 

__________ appear on the film negative.