Problem R-13

Due is DSC 203 by 12 Noon, Friday April 19, 2002

Proposed by Judy Downey

How many triangles with positive area are there whose vertices are points in the xy-plane whose coordinates are integers (x,y) satisfying

$$1\leq x\leq 4\quad\mbox{ and }\quad 1\leq y\leq 4\mbox{ ?}$$

Solutions, questions and/or comments should be directed to Judy Downey or Griff Elder

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Last modified:   Thu Apr 11 20:17:03 CDT 2002