When creating a construction line it is important to indicate its length and direction. Also, it is frequently required to create lines at 90 degree angles (vertically and horizontally), thus using the orthogonal regime comes in handy. To activate the orthogonal regime press the “O” key and at the left bottom corner of the TS window, a respective marker will appear. Create a strictly horizontal construction line.
Exercise adding various construction lines of a definite/indefinite length
