Euler diagram: Overview
An Euler diagram is similar, but not the same as, a Venn diagram. While they both use circles to create diagrams, there’s a major difference: Venn diagrams represent an entire set, while Euler diagrams can represent a part of a set. A Venn diagram can have a shaded area to show an empty set. That area in an Euler diagram could simply be missing from the diagram altogether. Euler diagrams are difficult to draw by hand (a simple one is outlined below). You’re probably better off using software to create one like Smart Draw or Venn Master.
Euler diagram: Steps
Sample question: Draw an Euler diagram to represent the following statements:
All wizards can do magic.
No lizards can do magic.
No wizard is a lizard.
Step 3: Read the third statement and move the corresponding circle accordingly. “No wizards are lizards” must mean that the entire lizard circle has to be outside the wizard circle. In this case, the graph already has the lizard circle outside the wizard circle, so we’re done!
University of Kent . Retrieved October 19th, 2015.
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