In an extend relationship, the arrow points from the extended use case to the extending one.

Name: In an extend relationship, the arrow points from the extended use case to the extending one.
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In an extend relationship in use case diagrams, the arrow points from the extending use case to the extended one, indicating that the behavior of the extended use case is extended or supplemented by the extending use case under certain conditions.

In an Extend Relationship, the Arrow Points from the Extended