Open a document and select the Markup toolbar & select the shape.This is the simple way you can use the Pdf Adobe reader.
You can also choose different shapes according to your choice and requirements. How to Draw Shapes on a PDF in Adobe Reader Just follow the simple steps mention below: The PDF adobe reader also facilitates that you can Resize, remove, and also adjust the shape. How to Delete, Resize, and Remove PDF Drawing in adobe Reader Just open the document and draw, resize and adjust the shape so easily The Pdf usually uses for reading but this feature also helps you to draw in PDF documents.