Answer:
130
Step-by-step explanation:
1 and 2 form a straight line, so they are supplementary. That means they add up to 180. So,
a1+a2=180
50+a2=180
a2=130
Answer:
D
Step-by-step explanation:
1 1/4 + 3/4 + 2/4 + 1/4
1+1+ 3/4
2 3/4
65 degrees because then it adds to 180 degrees