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# What does a quadrilateral shape look like?

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A quadrilateral is any two-dimensional shape or polygon that has four straight sides. A quadrilateral can also be called a quadrangle or a tetragon.

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There are different types of quadrilateral figures, and they can look like rectangles, squares, rhombuses, kites or trapezoids. A rectangle, square and rhombus are examples of a parallelogram. A parallelogram is a four-sided shape in which opposite sides must be parallel and opposite angles must be equal in measurement.

There also are regular and irregular quadrilaterals. In a regular quadrilateral, all sides are equal in length and all angles are also equal. An example of a regular quadrilateral is a square. All other quadrilaterals that do not conform to the definition of a regular quadrilateral are irregular ones.

All types of quadrilaterals have four sides and four vertices, and the sum of all the interior angles of all figures classified as quadrilaterals must equal 360 degrees.

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## Related Questions

• A:

In general, a shape with four sides, whether they are equal or not, is called a quadrilateral. Another name for this type of shape is a tetragon.

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• A:

A two-dimensional shape with nine straight sides is called a nonagon. This nine-sided polygon, which also has nine edges or vertices, is also called an enneagon. The term enneagon is preferable, but less popular than the name nonagon because the latter is simpler to spell and pronounce.

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A square is a two-dimensional shape that does not have a face, but a square is one of the faces of a cube. Faces are associated with solid figures, such as cylinders, cubes and pyramids. Two-dimensional shapes have breadth and width, but they do not have thickness.