Triangles (Interpersonal relations) 16 Mathematics 10 Young women 4 China 3 Fiction 3 Foreign relations 3 Geometry 3 History 3 Soviet Union 3 United States 3 Adolescent psychology 2 America 2 Biographers 2 Child psychology 2 Children 2 City and town life 2 Computer animation 2 Computer graphics 2 Education 2 English literature-fiction 2 Finite groups 2 Illegitimate children 2 India 2 International relations 2 Management 2 Married people 2 Mathematics -- Popular works. Mathematics 2 Matrices 2 Modular representations of groups 2 Scholars 2