To determine if the two indicated angles (e and f) are adjacent, we need to check if they share a common vertex and a common ray.
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Common Vertex: Angles e and f both emerge from the same point where the rays originate, so they share a common vertex.
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Common Ray: The ray forming angle e does not overlap or align with the ray forming angle f. Therefore, they do not share a common ray.
Since they share a common vertex but not a common ray, the correct response is:
Yes, they share a common vertex.