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Answer:
logician John Venn
Understanding the Venn Diagram
The English logician John Venn popularized the diagram in the 1880s. He called them Eulerian circles after the Swiss mathematician Leonard Euler, who created similar diagrams in the 1700s.
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Answer:
John Venn
Step-by-step explanation:
John Venn popularized the diagram in the 1880s. He called them Eulerian circles after the Swiss mathematician Leonard Euler, who created similar diagrams in the 1700s. ... This work helped him develop the Venn diagram.