www.coolmath.com/reference/trapezoids

Opposite sides of an isosceles **trapezoid** are the same length (congruent). The
angles on either side of the bases are the same size/measure (congruent). The
diagonals (not show here) are congruent. **trapezoid**. Adjacent angles (next to
each other) along the sides are supplementary. This **means** that their measures
add up ...

www.dummies.com/education/math/geometry/the-properties-of-trapezoids-and-isosceles-trapezoids

The properties of the **trapezoid** are as follows: The bases are parallel by
**definition**. Each lower base angle is supplementary to the upper base angle on
the same side. The properties of the isosceles **trapezoid** are as follows: The
properties of **trapezoid** apply by **definition** (parallel bases). The legs are
congruent by **definition**.

www.wyzant.com/resources/lessons/math/geometry/quadrilaterals/trapezoids_and_kites

Now that we've seen several types of quadrilaterals that are parallelograms, let's
learn about figures that **do** not have the properties of parallelograms. ...
**Trapezoids**. **Definition**: A **trapezoid** is a quadrilateral with exactly one pair of
parallel sides. Since a **trapezoid** must have exactly one pair of parallel sides, we
will need to ...

www.shmoop.com/quadrilaterals/trapezoids.html

Yes, **Trapezoids** isnâ€™t particularly exciting. But it can, at least, be enjoyable.
We dare you to prove us wrong.

www.yourdictionary.com/trapezoid

**trapezoid definition**: The **definition** of a **trapezoid** is a shape with four sides, only
two of which are parallel. (noun) An example of a **trapezoid** is the base of a
pyramid when the top is flat and there is not a point....

www.mathwords.com/t/trapezoid.htm

**Trapezoid**. US usage, **definition** 1: A quadrilateral which has a pair of opposite
sides which are parallel. The parallel sides are called the bases, and the other
two sides are called the legs. US usage, **definition** 2: A quadrilateral which has
one parallel pair of opposite sides and one non-parallel pair of opposite sides.

www.montereyinstitute.org/courses/DevelopmentalMath/COURSE_TEXT2_RESOURCE/U07_L2_T1_text_final.html

The prefix “quad-” **means** “four,” and “lateral” is derived from the Latin word for “
side. ... By **definition**, a rectangle is a parallelogram because its pairs of opposite
sides are parallel. ... Like the similarly named triangle that has two sides of equal
length, the isosceles **trapezoid** has a pair of opposite sides of equal length.

mathforum.org/library/drmath/view/66565.html

Nov 4, 2004 **...** Date: 11/04/2004 at 23:01:15 From: Doctor Peterson Subject: Re: The true
**definition** of a **trapezoid**. Hi, Peter. Both definitions are in use, so neither is wrong!
That **does** lead to confusion, but each author has to choose the **definition** that
makes most sense in his context. Here are a couple pages from our site ...

en.oxforddictionaries.com/definition/trapezoid

**Definition** of **trapezoid** - a quadrilateral with no sides parallel., a small carpal
bone in the base of the hand, articulating with the metacarpal of the inde.