If PST is a straight line and PQ = QS = SR in the diagram, find y.
Attached Figure / Diagram
A
24o
B
48o
C
72o
D
84o
Verified Correct Answer: C.
Step-by-Step Mathematical Solution
∠PSQ = ∠SPQ = 24 ( base ∠s of iso △)
∠SQR =
Source: Myschool Past Questions Archive (Record #32904)