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There are 7 dots on a circle. What is the maximal number of intersection points inside the circle created by connecting these points with lines?

 Jun 14, 2021
 #1
avatar+145 
+1

The answer is:

21

Each point connects 6 other points. But without overlapping the points, 21 points is the correct answer.

Draw a circle and try it out yourself!

I hope this helps!

 Jun 14, 2021
 #2
avatar+114102 
+1

 

 

10+12+9+4=35

 

 Jun 14, 2021
edited by Melody  Jun 14, 2021

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