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Angles are not necessarily equal, and sides are not necessarily equal in length.

Angles are not necessarily equal, and sides are not necessarily equal in length.

Angles are not necessarily equal, and sides are not necessarily equal in length.

Angles are not necessarily equal, and sides are not necessarily equal in length.

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Angles are not necessarily equal, and sides are not necessarily equal in length.

Q: Why isn't a parallelogram a regular polygon?

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sometimes, a square is a parallelogram and it has all equal sides

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

Square, Quadrilateral, and Parallelogram.

All the sides of a regular polygon have the same length. If two or more sides of a polygon have different lengths, then the polygon is not regular.

Generally - a parallelogram.

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A 4 sided parallelogram is an irregular polygon

A 4 sided parallelogram is an irregular polygon

sometimes, a square is a parallelogram and it has all equal sides

No. In a regular polygon, all sides are congruent, and all angles are congruent. A parallelogram doesn't satisfy either of these conditions.No. In a regular polygon, all sides are congruent, and all angles are congruent. A parallelogram doesn't satisfy either of these conditions.No. In a regular polygon, all sides are congruent, and all angles are congruent. A parallelogram doesn't satisfy either of these conditions.No. In a regular polygon, all sides are congruent, and all angles are congruent. A parallelogram doesn't satisfy either of these conditions.

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

No, If all angles are equal and all sides are equal, then it is a regular polygon (otherwise it is 'irregular'). In this case, parallelogram is irregular.

square, rectangle, quadrilateral, polygon, parallelogram, equilateral

A square, a rectangle, a parallelogram.

Yes, a parallelogram is an irregular polygon because its sides and angles are not all the same. For a shape to be a regular polygon it must be equangular (all angles are the same) and equilateral (all sides have the same length).

A parallelogram IS a polygon so the question is misguided.

No. In a regular polygon, all sides and all angles are equal. A rhombus has four equal sides but the angles don't have to be equal, so in general a rhombus is not a regular quadrilateral or a regular parallelogram. If the rhombus happens to have four equal angles, then it is a square, which would be a regular parallelogram.

A quadrilateral, a parallelogram, a rhombus, a rectangle, a regular polygon.