en.wikipedia.org/wiki/Trapezoid

The former **definition** would make such concepts as the trapezoidal
approximation to a definite integral ill-defined. This article uses the inclusive
**definition** and considers parallelograms as special cases of a **trapezoid**. This is
also advocated in the taxonomy of quadrilaterals. Under the inclusive **definition**,
all parallelograms ...

www.mathsisfun.com/definitions/trapezoid.html

A 4-sided flat shape with straight sides that has a pair of opposite sides parallel. (
Called a trapezium in the UK. Both US and UK definitions of trapezium and
**trapezoid** are swapped over.) The sides that are parallel are called "bases". The
other sides are "legs" (which may or may not be parallel). See: Trapezium.
Angles

www.dictionary.com/browse/trapezoid

**Trapezoid definition**, a quadrilateral plane figure having two parallel and two
nonparallel sides. See more.

**...**For a complete lesson on

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**trapezoid**, an isosceles

**trapezoid**, and the median of a

**trapezoid**. Students also learn the following ...

www.vocabulary.com/dictionary/trapezoid

The word **trapezoid** comes from the Greek trapeza **meaning** "table" and -oeides
**meaning** "shaped." Think of a **trapezoid** as table-shaped. It has a pair of parallel
sides that are also known as the bases of the figure. To find the area of a
**trapezoid**, take the average of the bases and multiply it by the height. In anatomy,
the ...

www.urbandictionary.com/define.php?term=trapezoid

Top **definition**. **trapezoid**unknown. The alias of Niel Cicierega, the founding father
of animutation. **Trapezoid** just released a new video! by Taylor Esformes March
29, 2004. 19 12. Get the mug. Get a **trapezoid** mug for your boyfriend Bob. 2.
**Trapezoids**unknown. n. A quadrilateral pair of breasts of either sex or animal
having ...

jwilson.coe.uga.edu/EMT668/EMAT6680.2000/Umberger/EMAT6690smu/Essay3smu/Essay3smu.html

In a **trapezoid** with bases of lengths "a" and "b," the arithmetic **mean**, "A," is the
length of the segment that is parallel to the bases and that also bisects the sides
of the **trapezoid**. ... The seven types of **mean** presented above have the following
relationships, when "a" and "b" are real numbers, and when "a" **does** not equal "b
" : ...

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

The parallelogram fits the "at least one" version of the **definition** because it has
two pairs of opposite sides parallel, therefore it falls into the category of being
both a **trapezoid** and a parallelogram. The parallelogram **does** not fit the "one
and only one" version of the **definition**. So how students answer this depends on
their ...

en.wiktionary.org/wiki/trapezoid

Etymology[edit]. From Ancient Greek τραπέζιον (trapézion, “irregular quadrilateral
”, literally “a little table”) + -oid (“resembling”). Pronunciation[edit]. enPR: tră'
pəzoid, IPA: /ˈtɹæpəzɔɪd/. Noun[edit]. **trapezoid** (plural **trapezoids**). (geometry,
US) A (convex) quadrilateral with two (non-adjacent) parallel sides. (geometry,
Britain ...