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What is a four-sided polygon called?

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Quick Answer

A four-sided polygon is called a quadrilateral. "Quad" means four and "lateral" means side, so quadrilateral truly means four sides. The internal angles in a quadrilateral add up to 360 degrees.

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Full Answer

Five common quadrilaterals have more specific properties: parallelograms, rectangles, squares, trapezoids and rhombuses. A trapezoid has one pair of opposite sides that are parallel. In a parallelogram, both sets of opposite sides are the same length and parallel to one another, while opposite angles are also equal. Rectangles are parallelograms where the angles all equal 90 degrees, and squares are rectangles with all sides of equal length. A rhombus is a parallelogram with four sides of equal length and is also called a diamond.

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Related Questions

  • Q:

    What is a 4-sided polygon called?

    A:

    A four-sided polygon is known as a quadrilateral. There are various types of quadrilaterals, but the most recognized are the square, rectangle, rhombus, trapezoid and the parallelogram. Quadrilaterals are always flat shapes that have four straight edges and four corners or vertices.

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  • Q:

    How many sides does a trapezium have?

    A:

    A trapezium is a quadrilateral that consists of four sides that are not parallel. If one pair of these sides were parallel, it would be called a trapezoid. If both pairs were parallel, it would be a parallelogram.

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  • Q:

    What is a convex quadrilateral?

    A:

    A convex quadrilateral is a four-sided figure with interior angles of less than 180 degrees each and both of its diagonals contained within the shape. A diagonal is a line drawn from one angle to an opposite angle, and the two diagonals intersect at one point.

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  • Q:

    How many sides does a rectangle have?

    A:

    A rectangle is a quadrilateral that has four sides. In a rectangle, the opposite sides are of equal length and also parallel. Because of this, a rectangle is also a parallelogram.

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