Line M is parallel to line L. Name the angles which are congruent to angle R in the figure shown below:

C: P, D and A

Step-by-step explanation:

P is congruent by vertical angles

D is congruent by corresponding angles

A is congruent by alternate exterior

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.