Quick please helppp i need to figure out if they are similar, not similar, or not enough information

Answer:
∆OPQ is not similar to ∆RST
Step-by-step explanation:
It is shown that ∆OPQ is an equilateral triangle but ∆RST is a right-angled triangle so they have different angles and sides
Answer:
not similar because ∆RST has a 90° angle and ∆OPQ does not have a 90° angle