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Is every square a quadrilateral?
Yes- a square is a special kind of quadrilateral.
What is a quadrilateral with no parallel sides and no equal sides?
In the U.S., that is a specific kind of "trapezium", which is a quadrilateral with no parallel sides.AnswerA quadrilateral with no parallel sides and no equal sides is basically just that, a quadrilateral.
Is a parallelogram always a quadrilateral?
Yes. A quadrilateral is any plane figure bounded by four straight lines. A parallelogram has both pairs of opposite sides parallel and is therefore a special kind of quadrilateral.
Why is a trapezoid a quadrilateral but a quadrilateral is not a trapezoid?
For the same reason that a cat is an animal but an animal is not always a cat. Because a trapezoid is a special kind of quadrilateral. A quadrilateral is anything with four sides. A trapezoid has four sides, and also two of them are parallel to each other. Therefore some quadrilaterals are trapezoids, but most of them aren't.
What kind of quadrilateral has 2 pairs of parallel sides 4 equal sides and no right angles?
A rhombus.
