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A parallelogram. (A rectangle if the angles are 90o)
A parallelogram (which may also be a rectangle, if all four angles are equal to 90°)

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Is a polygon that has opposite sides that are parallel always a regular polygon?

No. A parallelogram, for example, is not a regular polygon. Even a rhombus, with parallel sides of equal lengths is not.


Is a parrallelogram a parallel?

NO!!!! A parallelogram is a polygon of four sides. The opposite sides are parallel and equal in length.


What is a polygon with opposite sides parallel and all sides equal length?

A square.


What is a polygon with four sides equal opposite sides parallel and four angles equal?

A polygon with four sides that has equal opposite sides parallel and four equal angles is called a rectangle. In a rectangle, opposite sides are both equal in length and parallel, while each of the four angles measures 90 degrees. If all four sides are also equal in length, the rectangle becomes a square.


What polygons are parallelograms?

Every 4-sided polygon in which the opposite sides are parallel is a parallelogram. Opposite sides are equal too, but it's not necessary to make that an explicit requirement, because if both pairs of opposite sides are parallel, then they also wind up being equal.


A figure with opposite sides parallel and all other sides equal length is what shape?

A regular polygon with an even number of sides.


What are three names for a polygon that has four equal sides and no right angles?

a rhombus, a quadrilateral without right angle, a quadrilateral with equal opposite parallel sides but no right angles


What is a polygon with four angles congruent sides and parallel sides?

The given description fits that of a square which has 4 equal sides, opposite sides are parallel and it has 4 interior right angles


Are the opposite sides of a parellelogram parallel?

Yes. A parallelogram is defined as having opposite sides that are parallel and equal in length, and opposite angles that are equal.


What polygon has the opposite angles equal?

parallelogram


Does a square have opposite sides that are parallel?

Yes. The opposite sides of a square are equal and parallel.


What is a four-sided polygon with two parallel sides?

A four-sided polygon with two parallel sides is called a trapezoid. In a trapezoid, the two parallel sides are known as the bases, while the non-parallel sides are called the legs. The parallel sides of a trapezoid are of different lengths, distinguishing it from a parallelogram where both pairs of opposite sides are parallel and equal in length. The sum of the interior angles of a trapezoid is always equal to 360 degrees.