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Quadrilateral having both pairs of opposite sides equal means Parallelogram (Theorem and Proof) - YouTube
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Prove the statement (in Euclidean geometry): If the opposite sides of a quadrilateral are equal in length, the figure is a parallelogram. | Homework.Study.com
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Opposite Angles Overview & Types | What are Opposite Angles? - Video & Lesson Transcript | Study.com
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Sheila Jeffreys Quote: “The opposite of heterosexual desire is the eroticising of sameness, a sameness of power, equality and mutuality. It is h...”
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