Quadrilateral ABCD is transformed according to the rule (x, y) → (y, –x). Which is another way to state the transformation? R0, 90° R0, 180° R0, 270° R0, 360°

18

step-by-step explanation:

draw the shape and you will see that f and k are actually at adjacent vertices (points of the hexagon that are neighboring).   so find the distance between (1,2) and (4,2).   that is easy since (1,2) and (4,2) is just a vertical distance to count, which is 3.   it is a regular polygon which means all sides are congruent.   you have 6 sides (hexa) so multiply 6 by 3 to receive 18.

what are the answer choices given for this problem?

you need to upload the picture of the circle.

step-by-step explanation:

the answer is 9 because the question is telling how much it be together.