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## Comments

## Tips[edit]

### Use circles to fix the distance between two objects[edit]

Circles are a great way to make the distance between two objects constant: If there are two points *A* and *B* on two lines *g* (point *A*) and *h* (point *B*) where *A* can be moved and *B* should have the constant distance *r* to *A* you can define *B* as the intersection between the line *h* and the circle around *A* with the radius *r*. As a circle intersects a line at two points (in case it's not tangetial or passing by) you have to hide & ignore the second intersection.