Subtract will remove from one shape what was covered by the second.Intersect will remove everything except the intersection of the two shapes, making it similar to the opposite of the combine function.Fragment will combine them but give you a separate area to work with within these three compartments.Combine is similar to merge, but you get empty space where your shapes were overlapping.Union simply joins the two shapes, becoming one shape that you can use like all other shapes in PowerPoint.Here’s a quick rundown of what each option does: For Windows, go to the Format tab > Merge Shapes dropdown menu. As you can see, there are several options for merging shapes, including union, combine, fragment, intersect, and subtract.
