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Quadrilateral - Wikipedia
Simple quadrilaterals. Any quadrilateral that is not self-intersecting is a simple quadrilateral. Convex quadrilaterals
Quadrilateral -- from Wolfram MathWorld
A quadrilateral, sometimes also known as a tetragon or quadrangle (Johnson 1929, p. 61) is a four-sided polygon. If not explicitly stated, all four polygon vertices are generally taken to lie in a plane.
Quadrilateral Shapes - Geometry: Math Games
Learn about quadrilaterals the fun way in this Quadrilateral Shape Shoot Geometry Math Game.
Quadrilaterals - Square, Rectangle, Rhombus, Trapezoid ...
(Also see this on Interactive Quadrilaterals). Properties. A quadrilateral has: four sides (edges) four vertices (corners) interior angles that add to 360 degrees:; Try drawing a quadrilateral, and measure the angles.
Quadrilateral | Definition of Quadrilateral by Merriam-Webster
The new 2,700-square-foot space feels like a geometric funhouse — quadrilaterals of wood overhead, an enveloping half-circle over the open kitchen, and the hypotenuse of the bar slanting through the lounge.
Definition of Quadrilateral - Maths Resources
Math explained in easy language, plus puzzles, games, quizzes, videos and worksheets. For K-12 kids, teachers and parents.
Quadrilateral | Define Quadrilateral at Dictionary.com
A quadrilateral figure that has only two of its four sides parallel.
Quadrilateral Family Tree. Explore rules of quadrilaterals ...
Quadrilaterals classiifed with the classic family tree diagram--roll over each shape(rhombus, rectangle etc..) to see its unique properties.
Polygons - Quadrilaterals - First Glance
A quadrilateral is a four-sided polygon with four angles. There are many kinds of quadrilaterals. The five most common types are the parallelogram, the rectangle, the square, the trapezoid, and the rhombus.
Is a quadrilateral always a parallelogram - Answers.com
Yes, a parallelogram has four sides, making it a quadrilateral.All parallelograms are quadrilaterals, but not all quadrilateralsare parallelograms.