Venn Diagram Pages

Exercises 4.3 - 4.4

Exercise 4.6

Exercises 5.2 - 5.3

Two and four circle diagrams appear in two colors on a white background edged by a black rectangle. Three circle diagrams appear in three colors on a white background surrounded by the sandstone of the exercise page.

Near each circle is a letter indicating its representation. Click on the letter to highlight its meaning within the exercise question.

Click on the white background to shade it or to unshade it.

Individual symbols appear to the right. They are in white boxes on the sandstone page. Drag and drop them on the diagram.

This three circle diagram is for syllogism AII-4. Since the X is on the line, the argument is invalid. (If it were in the very center area, the diagram would be for a valid argument since in diagramming the premises, we also diagrammed the conclusion.)