In some computer programs, you can "flip” or “flop” a shape that you draw. Flip means a reflection across a
vertical line. Flop means a reflection across a horizontal
line. In both cases, you can assume the line of reflection
passes through the center of the shape.
Which of the following shapes, when flipped, will never
coincide with the original shape?
I. rectangle
II. parallelogram
III. right triangle
IV. isosceles triangle
са
II and III only
ob I and III only
o c III and IV only
Od
II only