You can add a variety of diagrams using the diagramming tools on the Drawing toolbar (toolbar: A bar with buttons and options that you use to carry out commands. To display a toolbar, press ALT and then SHIFT+F10.). Diagram types include Cycle (Cycle diagram: A diagram that is used to show a process that has a continuous cycle.), Target (Target diagram: A diagram that is used to show steps toward a goal.), Radial (Radial diagram: A diagram that is used to show relationships of elements to a core element.), Venn (Venn diagram: A diagram that is used to show areas of overlap between and among elements.), and Pyramid (Pyramid diagram: A diagram that is used to show foundation-based relationships.). Use the diagrams to illustrate various conceptual material and to enliven documents (diagrams are not numerically based).

Diagram (radial type).

Diagram toolbar.

Drawing sizing handles.

Drawing border.
When you add or change a diagram, the diagram appears with drawing space around it, outlined by a non-printing border and sizing handles. You can size the diagram by using sizing commands to make the drawing area larger so you have more room to work, or you can get rid of extra space by fitting the border more closely to the diagram.
Format the entire diagram with preset styles; or, format pieces of it like you format shapes — add color and text, change line weight and style, and add fills, textures, and backgrounds. Use the Diagram toolbar that appears with your diagram to add elements or segments and to move them forward or backward.
Flowcharts