Kidney stones, also known as urolithiasis, are a common affliction of the urinary tract.
No. In order for a quadrilateral to be a trapezoid, it must have exactly one pair of parallel sides. A right trapezoid, therefore, has exactly one pair of right angles. However a square would be a right parallelogram (which is the current definition of a rectangle). In the UK, the word trapezoid refers to a quadrilateral with no sides parallel. They use the word trapezium to refer to what Canadians call a trapezoid. To make matters worse, North Americans call a quadrilateral with no parallel sides a trapezium. Here's a summary.
First and fore most a Trapezoid is a quadrilateral which is a 4 sided plane shape. 1  It has 4 lines. 2  It is a closed shape. 3  Two of the lines are parallel.  It is a simple quadrilateral - meaning the sum of it's angles is 360 1  degrees. A Trapezoid is a Trapezoid and cannot be named anything else.