Question

Devin’s teacher gave him the following figure and asked him to provide a statement that would guarantee lines a and b are parallel.



Which statement should Devin use to prove that lines a and b are parallel?

∠4 = 60°

∠8 = 60°

∠1 = 120°

∠3 = 120°

Answer 1

@brookieismyname If two lines are parallel then alternate angles are equal,
so angle 6= 60
Tell me what else is angle 6 equal to?

Answer 2

Angle 4?

Answer 3

Angle 8 =Angle 6 then
If A and B is parallel then Angle 6=60

Answer 4

Yeah that's is right but there is one more angle which is equal to angle 6

Answer 5

Thank you both !!

Answer 6

It's fine @cwtan next time, try to engage the asker and make them work for the answer

Answer 7

My broadband hv some problem.....
It's too late when i try to delete it....