what is a trapezoid

A trapezoid is a four-sided closed shape or figure with one pair of sides parallel to each other. The parallel sides are called the bases of the trapezoid, while the non-parallel sides are called the legs or lateral sides. The perpendicular distance between the parallel sides is called the altitude. A trapezoid is a convex quadrilateral in Euclidean geometry. It can be classified into three types: right trapezoid, isosceles trapezoid, and scalene trapezoid. A right trapezoid has a pair of right angles, while an isosceles trapezoid has equal length of non-parallel sides. The area of a trapezoid can be calculated by taking the average of the two parallel bases and multiplying it by the altitude. The perimeter of a trapezoid can be calculated by adding the lengths of all its sides.