Justify the last two steps of the proof. given: abcd is a rectangle. prove: δabc δcda abdc is a rectangle. abcd is a parallelogram. ab dc and bc da ac ac δabc δcda given definition of a rectangle. opposite sides of a parallelogram are congruent.

answer: it would most likely be y=6 and 5/7.

step-by-step explanation:

hi friend

here is your answer

there are two angles that are alternate interior angle with angle 9

the angle 15 and angle 7 are alternate interior angle with angle 9.

hope it is for you so mark my answer as a brainliest

17

step-by-step explanation:

51/3=17

thus 17 is your answer.