how do i rotate the page

Hope this helps! https://www.familysearch.org/en/help/helpcenter/article/how-do-i-rotate-an-image-while-indexing

To rotate an image, do the following:

Steps

1. In the top corner of the image window, in the vertical toolbar, click the icon for Adjust Image: 

1. In the pop-up window, click either Left  or Right to rotate the image 90 degrees in that direction: 
2. 
   
3. To rotate the image more than 90 degrees, repeat the above steps for each 90 degrees of rotation.

Here is a screenshot to show you where that is.