Translations:Basic Part Design Tutorial 019/59/en

Step G: Add external geometry and fully constrain the sketch
 * 1) Double click Sketch002 to enter edit mode.
 * 2) Rotate the view so you can clearly see the points as shown in Fig: CC2. This will ease subsequent steps. Note that the rectangle's initial position may be different in your sketch.
 * 3) Click Sketcher_External.svg External geometry.
 * 4) While the tool is active the cursor has this appearance: [[File:Pd_tut_eg_cursor.png]]
 * 5) Select point P1 in Fig: CC2. The selected point is added to the sketch as external geometry. In the Elements section of the task panel it will appear with a purple X icon or,, a purple dot icon.
 * 6) With the tool still active select point P2 in Fig: CC2. This external geometry should also appear in the Elements section.
 * 7) Exit the tool.
 * 8) Select point P1 and point P3 and apply a Sketcher_ConstrainVertical.svg Vertical constraint. The rectangle will be aligned with the X position of P1.
 * 9) Select point P2 and point P3 and apply a Sketcher_ConstrainHorizontal.svg Horizontal constraint. The rectangle will be aligned with the Y position of P2.
 * 10) You should have a fully constrained sketch similar to Fig: CC3.