The sum of /_ 1, /_7, and /_8 is A)180 or B)360 or C) 90. /_8 and /_12 are A) corresponding) B) alternate interior) C) same - side interior) angle. The measure of /_12 must be A) 120 B) 60 C) 65 D) 115. Stuart is A) not correct B) correct.

Help tell me which one you show for each answer!
Thank you...