Pages can have a specific template, so just create a new template and add the Menu on it.
You can copy the code on pages.php(this is the default page template) of you theme and paste on a new file (like “template-page-with-menu.php”). On the top of the code you must add the Template Name:
<?php /* Template Name: Page with Menu */ ?>
Then select this template on the pages that you want it.
