The Construction of Venn Diagrams

versity of Washington in Seattle. He was born in Yugoslavia in 1929, and educated in Yugoslavia and in Israel. After receiving his Ph.D. from the Hebrew University in Jerusalem in 1958, he spent two years at the Institute for Advanced Study in Princeton, NJ. Since then he has taught at Hebrew University, Michigan State University, and the University of Washington. His main fields of interest are geometry (in particular, convex sets and polytopes, tilings and patterns, arrangements of lines, and other areas of intuitive geometry) and combinatorics (in particular, graph theory). He has pub? lished two books and some 120 research and survey papers on these topics. He received the Lester R. Ford award for 1975 for the article [2] related to the topic of the present paper and the Carl B. Allendoerfer award for 1978 from the Mathematical Association of America. He is a member of the editorial boards of several mathematical journals. Since 1974, he has served as a lecturer in the Program of Visiting Lecturers of the Mathematical Association of America.