Question

9. A triangle is described by its "corners" in the order (< x1, yı >, < x2, Уг >, < x31%-) and drawn on a display screen using lines from < xı'yı > to < x2,Y2 >; < x2,U2 > to < x3,U3 >; and, finally, from < x3, уз > to < x1, yı > . A 3 3 matrix. 1 0 10 0 1 -20 is used to move this shape 10 places right and 20 places down. Alice computes the new coordinates < u1, wi >, < u2, W2 >, < uz, w3 >) of the triangle by: 1 010 T1 T2 T3 0 1 -20 u/1 W2 W3 Bill, on the other hand, computes (< u1, wi >, < u2, w2 >, < u3, w3 >) using ui wi I1 1 0 10 0 1 -20 u2 W2 u3 wg 1 Which of the following statements describes the outcome of these computations? □ A. Neither Alice nor Bill's computation correctly generate the new triangle coordinates for all trian gles. QB. Alice's computation is correct for right-angled triangles only. DC. Only Alice's computation correctly generates the new triangle coordinates for all triangles. ID. Only Bill's computation correctly generates the new triangle coordinates for all triangles. QE. Bill's computation is correct for right-angled triangles only.

Answer 1

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