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Mathematics, 12.08.2020 09:01, sanakhalid8881
1. ABCD is a quadrilateral in which angle A = angle C and angle B = angle D
Prove that, if the opposite angles of a quadrilateral are equal, then the quadrilateral is a
parallelogram.
![answer](/tpl/images/cats/otvet.png)
Answers: 2
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1. ABCD is a quadrilateral in which angle A = angle C and angle B = angle D
Prove that, if the oppo...
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