1. Which of the following is a pair of vertical angles? a. Angle 1 and Angle 2 c. Angle 3 and Angle 6 b. Angle 1 and Angle 5 d. Angle 5 and Angle 8 2. Which of the following is a linear pair? a. Angle 1 and Angle 2 c. Angle 3 and Angle 6 b. Angle 1 and Angle 5 d. Angle 5 and Angle 8