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2013 AMC 10A Problems/Problem 25

Revision as of 21:16, 6 February 2013 by Golden ratio (talk | contribs) (Created page with " == '''Problem''' == 25. All 20 diagonals are drawn in a regular octagon. At how many distinct points in the interior of the octagon (not on the boundary) do two or more diagona...")
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Problem

25. All 20 diagonals are drawn in a regular octagon. At how many distinct points in the interior of the octagon (not on the boundary) do two or more diagonals intersect?\\ (A) 49 \qquad (B) 65 \qquad (C) 70 \qquad (D) 96 \qquad (E) 128

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