0
If a quadrilateral is a parallelogram then its opposite angles are always supplementary?
Add your answer:
Earn +20 pts
What is a rectangle always an example of?
A rectangle is always a quadrilateral and a parallelogram.
Are consecutive angles in a parallelogram always congruent?
Not unless the parallelogram is a rectangle. In every parallelogram, consecutive angles are supplementary.
Which quadrilaterals are opposite angles always congruent?
(1) Parallelogram A parallelogram is a quadrilateral with two sets of parallel sides. The opposite or facing sides of a parallelogram are of equal length, and the opposite angles of a parallelogram are equal.(2) SquareA square is a regular quadrilateral. This means that is has four equal sides and four equal angles.(3) RhombusA rhombus is a quadrilateral whose four sides all have the same length. Opposite angles of a rhombus have equal measure. The two diagonals of a rhombus are perpendicular.(4) RectangleA rectangle normally refers to a quadrilateral with four right angles.ParallelogramSquareRhombus
If both diagonals of a quadrilateral bisect each other when is the quadrilateral a parallelogram?
always
What is always true about a parallelogram?
It is always true that a parallelogram:is a four-sided shape (a quadrilateral)has opposite sides that are parallel to each other and of the same lengthhas opposite internal angles that equal one anotherhas diagonals that bisect one anotherhas a rotational symmetry of 2.
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.
Parallelogram consecutive angles conjecture?
The Parallelogram Consecutive Angles Conjecture states that the consecutive angles in a parallelogram are supplementary. This means that the sum of two adjacent angles in a parallelogram is always 180 degrees. This property follows from the fact that opposite angles in a parallelogram are congruent.
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.
