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.
A trapezoid is a special quadrilateral (have four sides) having one pair of parallel sides and other pair is non-parallel sides. In American English it is used as trapezoid and in the British English it is used as trapezium.bases are called parallel sides of trapezoid and non parallel sides are called leg..