Question

Under a parallel projection, the point (2, 3,-1) has been viewed at (3, 3, 0), then the direction of projection should be the vector a)(1,0,1)
b(1,0,-1)
c)(0,1,1)
d)(0,-1,1)​

Answer 1

Option (a) is the correct answer. The direction of the projection should be the vector (1, 0, 1).

Given:

Under a parallel projection, (2,3,-1) has been viewed at (3, 3, 0).

To find:

Direction of projection

Solution:

Under a parallel projection, the direction of projection would be the vector pointing from the point being viewed to the point of projection.

The corresponding vector can be found by subtracting the coordinates of the point being viewed from the coordinates of the point of projection

In the given data,

The point being viewed is (2, 3, -1)

The point of projection is (3, 3, 0)

The vector is given by

((3-2), (3-3), (0-(-1))

= (1, 0, 1)

Therefore, the correct answer is (a) (1, 0, 1).

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