The classic two-set Venn diagram consists of two circles, but you can compare more than two things with a Venn diagram: a three-set Venn diagram has three overlapping circles, a four-set has four ...

For example, if one circle represents every number between 1 and 25 and another represents every number between 1 and 100 that is divisible by 5, the overlapping area would contain the numbers 5 ...

You know how those charts work. It's two circles that overlap to demonstrate a relationship between two sets. The similarities go in the middle and the differences go in the outer circles. ...

Intersection of two circles You may be asked to show that two circles are touching, and say whether they're touching internally or externally. To do this, you need to work out the radius and the ...