Hello. I need help with explaining why a quadrilateral is a parallelogram and not a rhombus or a rectangle.

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Let's xxxxx review xxx xxxxxxxxxxx xxx xxxxxxxxxxxxxx parallelogram, xxxxxxx xxx rectangle.
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x xxxxxxxxxxxxx xx a xxxxxxx with 4 xxxxx xxx x xxxxxxxx (corners). It doesn't matter what xxxxxxx the xxxxx have or what angles xx xxxx xx the xxxxxxxx By definition all parallelograms, rhombuses and xxxxxxxxxx are quadrilaterals.
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x parallelogram xx xxxxxxx xx being a xxxxxx (this xxxxx that no interior angle is greater than 180 xxxxxxxx quadrilateral xxxx two xxxxx of parallel xxxxxx As a consequence xx the xxxxxxxxxxxx xxx opposite xxxxx of x xxxxxxxxxxxxx are of xxxxx length and xxx xxxxxxxx xxxxxx xxx xx a xxxxxxxxxxxxx xxx xx xxxxx measure.
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A rhombus is defined as x xxxxxxxxxxxxx with all the sides xx xxxxx length. Since xxx xxx sides xxx xxxxx it xxx xx xxxxxx xxxxxx that

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