Question

abcd is a quadrilateral in which ab=cd and ad=bc show that parallelogram​

Answer 1

Answer:

Therefore,as all three sides ofABC are equal to corresponding sides of COA, we can say that both the triangles are congruents by SSS congruences rule.as the opposite angles of quadrilateral ABCD are equal,I.e.,angle DAB=angle BCD and angle angle ABC =angle CDA,so we can say that quadrilateral ABCD is a parallelogram

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