Stephanie’s teacher gave her the following figure and asked her to provide a statement that would guarantee lines a and b are parallel.
Which statement should Stephanie use to prove that lines a and b are parallel?

∠2 = 60°

∠4 = 60°

∠3 = 120°

∠5 = 120°

Question

Stephanie’s teacher gave her the following figure and asked her to provide a statement that would guarantee lines a and b are parallel.
Which statement should Stephanie use to prove that lines a and b are parallel? 

 ∠2 = 60° 

 ∠4 = 60° 

 ∠3 = 120° 

 ∠5 = 120°

anonymous · Answer

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anonymous · Answer

Angle 5 =120, Because they are corresponding angles.

anonymous · Answer

in a system of parallel line and a transversal, corresponding angles are equal. so if angle 5 is 120 degrees, the lines a and b are parallel