1.2.1 Set Theory (continued)

Example 2 Making a Venn Diagram and Finding the Complement of a Set

A Venn diagram shows the relationship between sets. Each set in a Venn diagram is represented by a closed figure, usually an oval. Within the oval, or closed figure, is the name of the set and the elements of the set. If two sets have elements in common (that is, if their intersection is not the empty set), then their ovals are drawn with an overlapping region. The elements common to both sets are included in this region. In other words, the overlapping region represents the intersection of the two sets. The totality of the two ovals represents the union of the two sets.

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