# Start and End Length hypothesis

Start and End Length hypothesis is used to build 1D mesh on geometrical edges.

A geometrical edge is divided into segments so that the first and the last segments have a specified length. Length of each but the first segment differs from length of the previous one by a constant factor. Then mesh nodes are constructed at segment ends location and 1D mesh elements are constructed on them.

To define the Average Length hypothesis:

Select this hypothesis s in the Create Hypotheses dialog box click Create. The following dialog box will appear:

In this dialog box you can set:

- Name of your Start and End Length hypothesis

- Start and End Length of segments