quadrilateral
4 sided polygon
A quadrilateral is a polygon with four sides, four vertices, and four angles. It is a closed figure with four straight sides, making it a two-dimensional shape. There are many different types of quadrilaterals, including squares, rectangles, parallelograms, rhombuses, trapezoids, and kites.
Properties of quadrilaterals can vary depending on the type of quadrilateral. Some common properties include:
– The sum of the interior angles of a quadrilateral is always 360 degrees.
– Opposite angles in a quadrilateral are equal.
– Adjacent angles in a quadrilateral add up to 180 degrees.
– The diagonals of a quadrilateral may intersect at a point (called the intersection point) within the interior of the quadrilateral, or outside the quadrilateral.
– The length of the diagonals can be used to determine properties of the quadrilateral, such as symmetry or area.
Quadrilaterals are used in many areas of geometry, including in the study of polygons, angles, area, and perimeter. Understanding the properties of quadrilaterals is important for solving problems in geometry and for representing and interpreting real-world situations involving shapes.
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