Pics includeddd! 85 points

i’ve been trying and trying on this problem and can’t seem to get it right : (

part c refers to the question above so if u can answer both i’ll give u brainliest

In the figure below, segment ac is congruent to segment ab: triangle abc with a segment joining vertex a to point d on side bc. side ab is congruent to side ac which statement is used to prove that angle abd is congruent to angle acd? segment ad bisects angle cab. triangle acd is similar to triangle abd. segment ad is congruent to segment ac. angle cab is congruent to angle cba.

Find the area of a parallelogram with base 15 yards and height 21 2/3

Which value of m will create a system of parallel lines with no solution? y= mx - 6 8x - 4y = 12