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• 18:10, 3 November 2007 Minsoens (talk | contribs) uploaded a new version of File:AIME 1991 Solution 12.png (defaultpen(fontsize(8)); pair A=(0,28.8), B=(38.4,28.8), C=(38.4,0), D=(0,0), O, P=(23.4,28.8), Q=(38.4,8.8), R=(15,0), S=(0,20); O=intersectionpoint(A--C,B--D); draw(A--B--C--D--cycle);draw(P--R..Q--S); draw(P--Q--R--S--cycle); label("A",A,NW);label("B",)
• 18:02, 3 November 2007 Minsoens (talk | contribs) uploaded File:AIME 1991 Solution 12.png (defaultpen(fontsize(8)); pair A=(0,28.8), B=(38.4,28.8), C=(38.4,0), D=(0,0), O, P=(23.4,28.8), Q=(38.4,8.8), R=(15,0), S=(0,20); O=intersectionpoint(A--C,B--D); draw(A--B--C--D--cycle);draw(P--R..Q--S); draw(P--Q--R--S--cycle); label("A",A,NW);label("B",)