Question

(a) name the vertex of ∠sqt.
(b) write two other names for ∠rqs.
(c) name the sides of ∠1.

Explanation:

(a) The vertex of an angle is the common endpoint of the rays that form the angle. For ∠SQT, the common endpoint is Q.
(b) An angle can be named by the vertex alone (if there is no ambiguity) or by the three - point naming convention. For ∠RQS, two other names are ∠2 and ∠SQR.
(c) The sides of an angle are the two rays that meet at the vertex. For ∠1, the sides are ray QT and ray QR.

Answer:

(a) Q
(b) ∠2, ∠SQR
(c) Ray QT, Ray QR