- Measure angles and create angled Construction Line entities.
- Place protractor’s center at vertex (where two lines meet) of angle.
- Click to set vertex.
- Move cursor in circle until touching start of angle (one of the lines).
- Click to set start of angle.
- Move cursor in circle until touching end of angle (other line).
- Click to measure angle.
- Esc = Cancel operation.
- Ctrl = Toggles create construction line
- Shift = Lock inference