Question

Identifying Adjacent Angles
Examine the intersection of these two lines:

2 lines intersect to form 4 angles. From the top, clockwise, the angles are 1, 4, 2, 3.

Which pairs of angles are adjacent? Select all that apply.
∠1 and ∠2
∠1 and ∠3
∠1 and ∠4
∠2 and ∠3
∠2 and ∠4
∠3 and ∠4

Answer 1

Adjacent pairs: ∠1 and ∠3; ∠1 and ∠4; ∠2 and ∠3; ∠2 and ∠4.

Reason: adjacent angles share a common side and vertex (they are next to each other). The opposite/vertical pairs ∠1 & ∠2 and ∠3 & ∠4 are not adjacent.