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Mathematics, 27.02.2021 05:40, netflixacc0107
Elena wants to prove that a quadrilateral with 4 right angles must have congruent opposite
sides. Explain to Elena how she can use the fact that all rectangles are parallelograms in
her proof.
![answer](/tpl/images/cats/otvet.png)
Answers: 3
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Elena wants to prove that a quadrilateral with 4 right angles must have congruent opposite
sides. E...
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