Which of the following is the final step in bisecting an angle? Mark the intersection point of the two arcs, and draw a ray from the vertex through this intersection point.
Mark the intersection points of the rays and arc.
Place the compass on one of those intersection points, and draw an arc inside the angle.
Swing an arc that intersects both rays of the angle.

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.

for this case we must apply distributive property to the following expression:

the distributive property states that:

then, when applying the property we have to multiply the -2 for each term within the parenthesis: