Question

In the below fig, state which lines are parallel and why?

Answer 1

Vertically opposite angles are equal

`∠`EOC = `∠`DOK =100°

Angle `∠`DOK = `∠`ACO =100°

Here two lines EK and CA cut by a third line ‘l’ and the corresponding angles to it are

equal  ∴  EK || AC.