Side of the triangle below has been extended to form an exterior angle of 135 find the value of X

x = 45

Step-by-step explanation:

x + 135 = 180  {Linear pair}

        x = 180 - 135          {Subtract 135 from both sides}

        x = 45

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.