MATHEMATICS · Multi-part · CBSE · Mathematics · Lines and Angles · Lines and Angles
Problem
Lines AB and CD intersect at point O. The four angles around O are numbered 1, 2, 3 and 4 in clockwise order starting from the angle in the top-left position.
(i) Which angle is vertically opposite to ∠1?
(ii) Name both angles that form a linear pair with ∠2.