Given:
The objective is to identify ∡2 and ∡7 as alternate interior, alternate exterior, corresponding or vertical angle.
From the given figure, l1 and l2 are two parallel lines. The required angles ∡2 and ∡7 are placed outside the parallel lines and present in alternate sides of the transversal line.
Hence, the angles ∡2 and ∡7 are alternate exterior angles.
