NQ-180 is the same rotation as

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 is the rest of the question? ?

answer: they are supplementary angles

step-by-step explanation: 161+19=180. supplementary angles equal 180 degrees

the square root of 16 is 4.

4*4 = 16