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False because it will have 2 equal opposite obtuse angles and 2 equal opposite acute angles with the 4 angles adding up to 360 degrees.

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Q: If a quadrilateral is a parallelogram then its opposite angles are always supplementary?
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Is this statement true or falseIf a quadrilateral is a parallelogram, then its opposite angles are always supplementary?

false


The opposite angles of a quadrilateral in a circumscribed circle are always complimentary?

No, they are supplementary.


If both pairs of opposite sides of a quadrilateral are congruent then the quadrilateral is a parallelogram?

always


Which property is always true for a quadrilateral inscribed in a circle?

opposite angles are supplementary


If a quadrilateral is a parallelogram will it always have equal angles?

Diagonally opposite pairs of angles will always be equal, but the only time all angles in a quadrilateral parallelogram are equal is when that shape is a rectangle.


What quadrilateral had opposite sides that are parallel and congruent?

A square, always, a rhombus, always, a parallelogram, always, and rectangles, always.


When is a square a parellelogram?

A square is always a parallelogram b/c a parallelogram is a quadrilateral with two pairs of parallel sides. The opposite or facing sides of a parallelogram are of equal length and the opposite angles of a parallelogram are of equal measure. A square is always this.


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.


How Dow you that the opposite angles of a parallelogram are equal?

First of all, you know the opposite sides of a parallelogram are equal because of the definition of a parallelogram. Therefore, two adjacent angles in the parallelogram are supplementary, because same-side interior angles in two parallels and a transversal are always supplementary. Therefore, opposite angles in a paralellogram are equal, because two angles both supplementary to a third angle are equal to each other.


Is a parrallelogram always a quadrilateral?

Yes, a parallelogram is always a quadrilateral.


Are all parallelograms a quadrilaterals always sometimes or never?

-- A parallelogram is always a quadrilateral. -- A quadrilateral is sometimes a parallelogram.


If one diagonal of a quadrilateral bisects the other when is the quadrilateral a parallelogram?

In this case, the quadrilateral is sometimes a parallelogram.