Add Quick Launch menu to a Web Part Page in SharePoint 2010

If you want to show the Quick Launch menu (from parent) in a Web Part Page, follow these steps:

1) Open your site in SharePoint Designer 2010.

2) Select the All Files folder (at the bottom of the navigation menu), and then select the document library that holds your web part page(s).

3) Click on the appropriate web part page, and choose to Edit file. Select Advanced Mode in the ribbon to enable editing of the file.

4) Remove the following from your web part page:

 
and
 

 
5) Save the file.