You would think so, but a trapezoid is defined as having exactly one pair of parallel sides. So an isosceles trapezoid having 2 pairs would be breaking the rules.
However, there are some math experts who define trapezoid as having at least one pair of parallel sides. In this case it can happen.
The most important thing is to know which definition is being used. That will directly answer the question.
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A parallelogram is a quadrilateral (four-sided polygon) containing TWO pairs of parallel sides. A trapezoid is a quadrilateral with ONE pair of parallel sides. Therefore a trapezoid is NOT a parallelogram. Note: Both terms are misspelled in the question. The correct spellings are TRAPEZOID and PARALLELOGRAM.
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yes, a rectangle is a parallelogram with right angles.
No, not every trapezoid is an isosceles trapezoid.
The altitude of a trapezoid bisects the bases of the trapezoid.