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The Perfect Venn Diagram

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relative size of set B
1
compute overlap size relative to this set
A
B
overlap relative to set A
0.5
overlap relative to set B
0.5
A Venn diagram is commonly used to depict the relationship among sets. It is difficult, however, to draw freehand a Venn diagram that accurately captures a relationship between the cardinality of the sets and their area of overlap. This Demonstration produces the "perfect" Venn diagram for two sets
A
and
B
where you set the cardinality ratio between the two sets and the area of overlap between them. You can choose whether to compute the area of overlap relative to
A
or to
B
.
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