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OpenStudy (anonymous):
1. Which of the following quadrilaterals must have diagonals of equal length? I. Parallelogram II. Rhombus III. Isosceles Trapezoid IV. Rectangle
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OpenStudy (callisto):
Rectangle
OpenStudy (anonymous):
I and II I, II, III, and IV III and IV II, III, and IV
OpenStudy (callisto):
III IV
Directrix (directrix):
III and IV
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