Outrageously Funny Word Dictionary :: Quadrangles

👉 Quadrangles are polygons with four sides and four angles. They are named after their shape, which is a rectangle (a parallelogram) with opposite sides parallel and equal in length. Quadrangles can also be classified as convex quadrilaterals or concave quadrilaterals depending on whether the sum of the interior angles at any vertex is greater than 180 degrees or less than it. Quadrangles are important in geometry, particularly in the study of triangles, because they provide a

quadrangles