Create Angular chain dimensions

1	When you start the Smart Dimension command, the program prompts you to select an entity. Click to select a line. Select the entity anywhere along its length except at a Snap point.
2	From the Type drop down list, select the Angular chain option and click on the second line to create the angular dimension.
3	To create the angular dimension, just choose the lo action and click again.
4	Similarly click on the successive lines to create the chain of angular dimensions

Properties
By clicking on the Properties Option, the Entity Properties window shows up, that enables you to control appearance of the Dimension and Text entities.