Select the Venn diagram that best represents the relationship between the following classes.
Triangles, Squares, Circles
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) →
In a Venn diagram two circles overlap when some members belong to both classes, one circle lies inside another when every member of the first belongs to the second, and circles stay apart when the classes have no common member.
A triangle has three sides and a square has four, so no figure is both a triangle and a square
A circle has no straight sides at all, so it is neither a triangle nor a square
No two classes share a member, so all three circles stay apart, as in Option (1)
