Add an Angle Constraint
- Select Sketch | Constraints | Add angle constraint.
- Select the first line. This line keeps its position.
- Select the second line. This line moves so that it is in the desired angle in relation to the first line.
- Select the position of the dimension.
- Edit the data in the Edit constraint dialog box.
- Select OK.
- Add more angle constraints by repeating steps 2-6 or finish adding angle constraints by pressing the ESC key or the middle mouse button.