and 
are parallel, and transversals 
and intersect at A, as shown in the figure below. Given that △ABC is an equilateral triangle, x = ?
Answer and Explanation
Your Answer is
Correct Answer is H
Explanation
Triangle ABC is an equilateral triangle meaning that all three angles are 60°. Because the straight line BC and the straight line DE are parallel, ∠ABC and ∠ADE are the same angles, both of which are 60°. So the required angle is 120°.