This image summarizes the four main set operations. Union, intersection, difference, and complement. These concepts are applied in the World Cup Venn diagram below to classify countries based on their tournament performance.
2026 Fifa World Cup: Sets Operations with Venn diagram
2026 Fifa World Cup: Illustrating set operations with Venn diagrams
Objective: This GeoGebra illustration demonstrates set operations using countries from the 2026 Fifa World Cup. The Venn diagram shows relationships between teams that qualified for the knockout stage, won their group, and finished the group stage undefeated. [br][br]Teachers can use this applet to introduce set operations such as unions, intersections, and complements by having students identify which countries belong to each region of the Venn diagram.
Set Definitions
Universal Set (U): All 48 countries that participated in the 2026 Fifa world cup.[br][br]Set A: Countries that qualified for the knockout stage. [br][br]Set B: Countries that won their group.[br][br]Set C: Countries that finished the group stage undefeated.[br][br]