Question

A parallelogram is transformed according to the rule (x, y) → (x, y). Which is another way to state the transformation?

A. R0, 90°
B. R0, 180°
C. R0, 270°
D. R0, 360°

Answer 1

D. R0, 360°

Explanation:

Since the transformation is from (x,y) to (x,y), the values stay the same...

It's just like a 360 degrees rotation then, since the end position is identical to the start position.

All other answers would affect at least one of the values to change sign like (-x,y), (x,-y) or (-x,-y)... but a 360 degrees rotation would not.