Acertain greek mathematician was born in 406 b. c. his father was born 51 years earlier. find the year in which his father was born.
in what year was his father born?

Step-by-step explanation:

403 - 51 = 352 B.C.

406-51 = 355 B.C.

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.

your answer would be 12