Transveral of parallel lines
    Parallel lines are those lines on a plane that do not intersect anywhere.

If two parallel lines are cut by a transversal, then
    •    Each pair of corresponding angles are equal
    •    Each pair of alternate interior angles are equal
    •    Each pair of interior angles on the same side of the transversal are supplementary.

•    If two lines are cut by a transversal and it is given that the pair of corresponding angles are equal or the pair of alternate interior angles or the pair of interior angles are supplementary then the lines have to be parallel.

Illustration 2

Determine the value of x