Text is easier to read in a vertical, or portrait, orientation. This is the default page arrangement in Word. Often, however, when you insert tables, charts, and other data, you want to flip all or some of the sheets horizontally.
To change the orientation of the entire document, switch to the Layout tab. There, click Orientation and choose Landscape. This will make all the pages in your document look horizontal.
If you need to flip a single page with selected text, after selecting it, go to the Layout tab and tap Page Options. Set the orientation to “Landscape” and the “toward selected text” option. After you confirm, the selected excerpt will be placed on the sheet in landscape orientation.
To flip one or more sheets, place the cursor at the beginning of the page you want to flip, and switch to the Layout tab. Click the Splits menu and choose Next Page. Then click on the Orientation item and specify “Landscape”.
A special feature of Word is that this will also cause all the sheets to rotate after the one specified. To return them to portrait orientation, move the cursor to the end of the landscape page, then select the “Next Page” option again in the “Breaks” menu.