Translations:Basic Sketcher Tutorial/10/en

3. Construction geometry is used to guide the creation of "real" geometry. Real geometry will be the one shown outside of the sketch edit mode, while construction geometry will only be shown inside the edit mode. Therefore, you can use as much construction geometry as you need to build real shapes.

3.1. Click on Toggle construction. Now geometrical elements will be drawn in Construction mode.

3.2. Click on Create line.

3.3. Approach the origin of the sketch, the point should highlight and near your cursor the coincident constraint icon will appear.

3.4. Click on the point, then move the pointer to start drawing a new line from it. Move the pointer so that the line has a length to around 30 mm. You don't have to be very precise in this step; later we will set the correct dimension.

3.5. Repeat this procedure four more times to place construction lines in a star pattern. Don't worry too much about their size or position, just extend them in the four quadrants.

3.6. Now exit construction mode by clicking again on Toggle construction.