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The triangle and the quadrilateral in the diagram below have 4 intersection points.
What is the largest number of intersection points that a triangle and a quadrilateral can have?
This problem is adapted from the World Mathematics Championships
Triangular Intersection
Age 14 to 16
ShortChallenge Level 
The triangle and the quadrilateral in the diagram below have 4 intersection points.
What is the largest number of intersection points that a triangle and a quadrilateral can have?
This problem is adapted from the World Mathematics Championships
You can find more short problems, arranged by curriculum topic, in our short problems collection.
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