Trapezformad

Trapezformad is an adjective used to describe a shape whose outline is a trapezoid (trapezium in some languages). In geometry, a trapezformad figure is a four‑sided polygon that has a pair of parallel sides, called the bases. The other two sides are non‑parallel and are referred to as the legs. In different mathematical traditions, there is some variation about whether a parallelogram is considered a trapezoid; some definitions exclude parallelograms from being trapezformad, while others include them as a special case of trapezoids.

Key properties of a trapezformad figure include a total interior angle sum of 360 degrees. If the bases are horizontal, the height is the perpendicular distance between them, and the area can be computed as the average of the base lengths times the height: Area = (a + b) × h / 2, where a and b are the lengths of the two bases. Isosceles trapezformad figures have equal base angles and equal diagonals. If the legs are equal, the trapezformad is called isosceles; such shapes often have symmetry about a perpendicular through the midpoints of the bases.

Examples and uses of trapezformad shapes appear in design, architecture, and engineering, where trapezoidal forms help achieve specific aesthetics or structural properties. In mathematical contexts, trapezformad figures are common in problems involving area, height, and coordinate geometry, including deriving formulas for missing elements given partial data.

See also: quadrilateral, parallelogram, isosceles trapezoid, trapezium.