MATHEMATICS · Single correct · CBSE · Mathematics · Lines and Angles · Lines and Angles
Problem
When two straight lines intersect, which one of the following statements is always true?
(a) The sum of all four angles formed is 180∘.
(b) Each pair of adjacent angles are equal.
(c) Each pair of vertically opposite angles are equal.
(d) The sum of any two vertically opposite angles is 180∘.