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Mathematics 23 Online
OpenStudy (anonymous):

Help: What is the area of the triangle in the diagram? 12(x1−y1)(x2−y1) 12y1(x2−x1) 12(x2−x1) 12(x22−y21)(x21−y21)−−−−−−−−−−−−−−−−√

OpenStudy (anonymous):

a

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