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What is a quadrilateral that has opposite angles congruent?
Every parallelogram is.
Why is a parallelogram always a quadrilateral but a quadrilateral is only sometimes a parallelogram?
A parallelogram must have 4 sides and so it must be a quadrilateral. However, the sides of a quadrilateral need not be parallel so a quadrilateral need not be a parallelogram.
What is a quadrilateral parallelogram?
A quadrilateral is a polygon with four sides. A parallelogram is a quadrilateral in which the opposite sides are parallel.
If one diagonal of a quadrilateral bisects the other when is the quadrilateral a parallelogram?
In this case, the quadrilateral is sometimes a parallelogram.
If opposite angles of a quadrilateral are supplementary is the quadrilateral a parallelogram?
No. A quadrilateral is a parallelogram when consecutiveangles are supplementary.
Is every quadrilateral a parallelogram?
no it is not
Can a quadrilateral be both a rhombus and a parallelogram?
Every rhombus is a parallelogram.
What is an quadrilateral parallelgram?
Every parallelogram must, by definition, be a quadrilateral.
Is every parallelogram a quadrilateral?
Yes.
Does every quadrilateral have to be a parallelogram or a trapezoid?
No.
Is every quadrilateral is a parallelogram?
yes
Does every quadrilateral is either a parallelogram or a trapezoid?
no
What is a quadrilateral that has opposite angles congruent?
Every parallelogram is.
Is every quadrilateral is a parreleogram?
No because any 4 sided shape is a quadrilateral which includes a parallelogram.
Is parallelogram is a square?
a parallelogram is defined as any quadrilateral (four sided object) with oposite sides being parallel. So yes every square is a parallelogram but every parallelogram is not a square.
Why is a parallelogram always a quadrilateral but a quadrilateral is only sometimes a parallelogram?
A parallelogram must have 4 sides and so it must be a quadrilateral. However, the sides of a quadrilateral need not be parallel so a quadrilateral need not be a parallelogram.
All rectangles are also what shape?
Every rectangle is a quadrilateral and a parallelogram
