To insert an angular dimension:

1. Select the Angular Dimension tool
2. Place your finger on the screen where you want the corner point of the angular dimension.
3. Drag your finger to the location where you want the first end point of the angular dimension.
4. Lift your finger off the screen to set the first end point.
5. Place your finger on the screen.
6. Drag your finger to the location where you want the last end point of the angular dimension.
7. Lift your finger off the screen to set the last end point.
   
8. This completes the angular dimension.

OR

1. Tap on the location where you want the corner point of the angular dimension.
2. Then tap where you want the first end point of the angular dimension.
3. Then tap where you want the last end point of the angular dimension.
   
4. This completes the angular dimension.

Editing Angular Dimensions

To edit an angular dimension:

1. Select the angular dimension.
2. Adjust the points of the angular dimension by dragging the blue control nodes.
   

To edit the radius of a linear dimension:

1. Select the linear dimension.
2. Drag the yellow control node of the highlight to increase or decrease the offset of the linear dimension.