Question

Two parallel lines are crossed by a transversal.

Vertical and parallel lines h and i are cut by transversal g. At the intersection of lines h and g, the uppercase right angle is 70 degrees and the bottom left angle is x degrees.
What is the value of x?

x = 40
x = 70
x = 110
x = 130

Answer 1

x = 70

Reason: The "upper right" and "bottom left" angles are vertical (opposite) angles at the intersection of lines h and g, and vertical angles are equal. Therefore x = 70°.