roles) || in_array('administrator', $user->roles) || in_array('admin', $user->roles ) ) { ?>
probname); ?>
Topic Classification: nid, "Topic Classification"); ?> Tags: nid, "Problem Tag");?>
Topics: nid, "Topics"); ?> Prerequisites: nid, "Prerequisites"); ?>
Supplies: nid, "Supplies"); ?> Pedagogy: nid, "Pedagogy"); ?>
Grade Vs Difficulty:
  EasyModerateChallengingPerplexing
1-2
3-4
5-6
7-8
9-10
11-12
13-14
Solution: nid, "Solution"); ?>
Problem

``Points of Intersection'' The goal is to position a prescribed number of lines in the (Euclidean) plane to obtain exactly 100 points of intersection. Begin with 100 lines, then try 29 lines, 21 lines, 19 lines, and finally 15 lines.

Details
Contributer: Brandy
Source Title: Circle in a Box
Authors
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References
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Reference Author Reference Title Reference URL
'; } ?>
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Problem Sets This Problem Belongs to:
parent_nid; ?> Set:
VARIABLES
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DEFINITIONS
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