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If both pairs of opposite angles of a quadrilateral are congruent then the quadrilateral is not a parallelogram?

False. If both pairs of opposite angles of a quadrilateral are congruent then the quadrilateral is a parallelogram.


If two opposite sides of a quadrilateral are parallel and congruent then the quadrilateral is a parallelogram?

False


If one pair of opposite angles of a quadrilateral is congruent then the quadrilateral is a parallelogram?

false; if both pairs


Is this statement true or falseIf one pair of opposite angles of a quadrilateral is congruent, then the quadrilateral is a parallelogram?

false


True or False- If opposite angles of a quadrilateral are supplementary then the quadrilateral is a parallelogram?

false


If opposite angles of a quadrilateral are supplementary is the quadrilateral a parallelogram?

No. A quadrilateral is a parallelogram when consecutiveangles are supplementary.


If a quadrilateral is a square then it is a parallelogram. A quadrilateral is a square if and only if it is a parallelogram.?

The second statement is false.


If a quadrilateral is a square then it is a parallelogram. 2. A quadrilateral is a square if and only if it is a parallelogram.?

The second statement is false.


If the diagonals of a parallelogram are congruent the parallelogram may or may not be a rectangle?

False


True or false A parallelogram is a quadrilateral in which opposite sides are perpendicular?

false


True or false If opposite angles of a quadrilateral are supplementary then the quadrilateral is a parallelogram?

True


Is this statement true or falseProving that the diagonals of a quadrilateral are perpendicular will show that a quadrilateral is a parallelogram?

false