Add mates to define relationships between the assembly components.
To make selections easier,
rotate the view by dragging with the middle mouse button in the graphics
area. Then, after making the selection, click Previous
View
(View toolbar). Other tools on the View toolbar
are useful as you work through this tutorial.
Select the top face of the knee and the bottom
face of the saddle for Entities to Mate
.

The Mate pop-up toolbar appears in the graphics
area. Coincident
is selected in both the PropertyManager and the pop-up toolbar.
A preview of the coincident mate appears.
To see how you can flip the alignment of the saddle, under Standard Mates, for Mate alignment:
Click Aligned
.
Click Anti-Aligned
.