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Mathematics, 02.10.2019 02:00 maithe

Which of these figures must be a rectangle?
a.) aparallelogram with four congruent sides.
b.) a trapezoid with at least one right angle
c.) a trapezoid with two congruent sides
d.) a parallelogram with at least one right angle

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Which of these figures must be a rectangle?
a.) aparallelogram with four congruent sides.
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