ERIC Number: EJ785736
Record Type: Journal
Publication Date: 2007
Reference Count: 0
Iterating the Number of Intersection Points of the Diagonals of Irregular Convex Polygons, or C (n, 4) the Hard Way!
Teaching Mathematics and Its Applications: An International Journal of the IMA, v26 n1 p38-44 2007
Counting the number of internal intersection points made by the diagonals of irregular convex polygons where no three diagonals are concurrent is an interesting problem in discrete mathematics. This paper uses an iterative approach to develop a summation relation which tallies the total number of intersections, and shows that this total can be expressed as a simple sum of products. This iterative approach also motivates solutions for the number of internal regions and number of line segments produced by the diagonals.
Descriptors: Computer Software, Geometric Concepts, Plane Geometry, Mathematics Education, Computation, Mathematics Instruction
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Publication Type: Journal Articles; Reports - Descriptive
Education Level: N/A
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