Are the triangle below congruent ?

both are true #18 is right because ΔABD and ΔCBE are congruent they are congruent because they both take up two of the three smaller triangles. #19 is right because ΔABE and ΔDBC are congruent they are congruent because  they both only take up one of the smaller trianges inside.

hope this helps!

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.

a

step-by-step explanation: