
Click the Formula icon
in the Knowledge toolbar.
The Formulas dialog box appears.
You will now select, one after the other, the dimensions
to be constrained and then enter in the dialog box the formulas to be
used.

Select a first dimension (1).

Click the Add Formula button in the
Formulas dialog box.
The Formula Editor dialog box appears.

Select a second dimension (3)
and add "/4".
Then, click OK.

Back in the Formulas dialog box, select a
first dimension (2).

Click the Add Formula button.
The Formula Editor dialog box appears.

Select a second dimension (3)
and add "*3 /4". Then, click OK.

Back in the Formulas dialog box, select a
first dimension (4).

Click the Add Formula button.
The Formula Editor dialog box appears.

Select a second dimension (1)
and then, click OK.

Back in the Formulas dialog box, select a
first dimension (5).

Click the Add Formula button.
The Formula Editor dialog box appears.

Select a second dimension (2)
and then, click OK.

Back in the Formulas dialog box, click OK.
Note that the specification tree is modified accordingly.

Doubleclick the dimension to be set as driving dimension
(3).
The Dimension Value dialog box appear.

If needed, activate the Drive geometry option.

Enter 100mm as dimension new length and press
OK.
All the dimensions you previously constrained using
formulas are automatically updated.