Answer:
(a) Sides MP and MQ
(b) ∠NMQ and ∠QMN
(c) M
Explanation:
(a) Asks you to name the sides of ∠2. If you look at the angle, you can see three letters: P, M, and Q. The two sides should be MP and MQ, because together, they form the angle 2.
(b) Asks you to name TWO alternatives for ∠1. It's not asking you for the sides, but the other names that the angle has, which would be ∠NMQ and ∠QMN. The three letters represent the angle, and remember, M is the central point and the other letters help it identify the angle.
(c) The vertex is the common point and middle letter of an angle. for ∠PMQ, you have M as your vertex.