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OpenStudy (imtiaz7):
Show that the four points (0,-1), (4,-3), (8,5), and (4,7) are the angular points of a rectangle.
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OpenStudy (kc_kennylau):
A rectangle is defined to be a quadrilateral with 4 right angles.
OpenStudy (kc_kennylau):
Enough hint?
OpenStudy (mathmale):
@Imtiaz7: I'd suggest you actually DRAW this quadrilateral. How could you then show or prove that the angles are all right angles?
OpenStudy (imtiaz7):
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