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°

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°

anonymous · Answer

attachment

ash2326 · Answer

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

anonymous · Answer

Angle 4?

cwtan · Answer

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

ash2326 · Answer

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

anonymous · Answer

Thank you both !!

ash2326 · Answer

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

cwtan · Answer

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