Question

write any two conditions used to show that the quadrilateral is a parellogram. ​

Answer 1

Answer:

If one pair of opposite sides of a quadrilateral are congruent and parallel, then the quadrilateral is a parallelogram. If — BC — AD and — BC ≅ — AD , then ABCD is a parallelogram. If the diagonals of a quadrilateral bisect each other, then the quadrilateral is a parallelogram.

Answer 2

Answer:

closed figer and sum of internal angles are 360 degrees

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