Whether cavalier projection is a parallel projection, Computer Graphics

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State whether the following statements are true or false. Give reasons/examples to justify your answer. 

a)  Cavalier projection is a parallel projection.

b)  Angles are not preserved in perspective projection in general. 

c)  Perspective projection is an affine transformation. 

d)  There can be more than one vanishing point in a projected image but only one principal vanishing point in a projected image.


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