What is a Trapezoid?
A trapezoid (known as a trapezium in British English) is a 2D quadrilateral with at least one pair of parallel sides. These parallel sides are referred to as the bases, while the non-parallel sides are known as the legs. Depending on the relationship between the legs and the angles, trapezoids can be categorized as isosceles (equal legs), right-angled, or scalene.
How to Use This Trapezoid Calculator Online
Calculating the dimensions of a trapezoid has never been easier. Follow these simple steps to get accurate results in seconds:
- Enter the Bases: Input the lengths of the top base (a) and the bottom base (b).
- Input the Height: Provide the vertical distance (h) between the two parallel bases.
- (Optional) Lateral Sides: If you want to find the perimeter, enter the lengths of sides (c) and (d).
- Calculate: Click the "Calculate Now" button to see the area and perimeter.
The Trapezoid Formulas
Our calculator uses standard geometric formulas to provide your results. The Area is calculated by taking the average of the two bases and multiplying by the height: Area = ((a + b) / 2) × h. The Perimeter is simply the sum of all four outer boundaries: Perimeter = a + b + c + d.
Frequently Asked Questions
Can a trapezoid have right angles? Yes, a right trapezoid has two adjacent right angles. What is an isosceles trapezoid? It is a trapezoid where the non-parallel sides (legs) are equal in length and the base angles are also equal.