To extend an entity to an implied boundary

1. Do one of the following:
• Choose Modify > Extend.
• On the Modify toolbar, click the Extend tool ().
• Type extend and then press Enter.
2. Select one or more boundary edges, and then press Enter.
3. In the prompt box, choose Edge Mode.
4. In the prompt box, choose Extend.
5. Select the entity to extend.
6. Select another entity to extend, or press Enter to complete the command.

Select the boundary edge (A), and then select the entities to extend (B).	Result.

How do I...

Extend an entity

Extend several entities using the fence selection method