Answer:
Step-by-step explanation:
Given are parallel lines e and f
Also given that angle 3 =120 and angle 12 =80
Two transversals cut them
By axiom of parallel lines we have corresponding angles equal, alternate angles equal and interior angles are supplmentary
Using these we get
1= 180-120 =60
2=120: 4=60: 5=60: 6=120:7=120 and 8=60
Similarly for other transversal we get
10=100:13=80:10=100:14=100
Hence all are right except 6 and 10.
