en.wikipedia.org/wiki/Trapezoid

In Euclidean geometry, a convex quadrilateral with at least one pair of parallel
sides is referred to as a **trapezoid** in American and Canadian English but as a ...

www.illustrativemathematics.org/content-standards/tasks/1504

The purpose of this task is for students to articulate a definition for a **trapezoid**.
There are two competing definitions for "**trapezoid**": The exclusive definition of a ...

www.mathsisfun.com/geometry/trapezoid.html

(Jump to Area of a **Trapezoid** or Perimeter of a **Trapezoid**). A **trapezoid** is a 4-
sided flat shape with straight sides that has a pair of opposite sides parallel ...

virtualnerd.com/geometry/quadrilaterals/trapezoids-kites/trapezoid-definition

Note: A **trapezoid** is a special type of quadrilateral with some special properties.
This tutorial introduces you to **trapezoids** and gives you a look at the special ...

thinkmath.edc.org/resource/shape-trapezoid

Meaning. A **trapezoid** is a quadrilateral with at least one pair of parallel sides. No
other features matter. (In English-speaking countries outside of North America, ...

www.mathinary.com/trapezoid.jsp

A **trapezoid** is a shape of plane geometry. It's a quadrilateral, where at least two
sides are parallel. If a **trapezoid** has two pairs of parallel sides, it's also called a ...

www.khanacademy.org/math/basic-geo/basic-geo-area-and-perimeter/area-trap-composite/v/area-of-a-trapezoid-1

Area of a **trapezoid** is found with the formula, A=(a+b)/2 x h. Learn how to use the
formula to find area of **trapezoids**.

www.mathopenref.com/trapezium.html

A **trapezium** is defined by the properties it does not have. It has no parallel sides.
Any quadrilateral drawn at random would probably be a **trapezium**. Since it has ...