www.algebra.com/algebra/homework/Polygons/Trapezoids-and-their-base-angles.lesson

**Trapezoid** is a quadrilateral which has two opposite sides parallel and the other
two sides non-parallel (see the Figure 1). ... The angles at the ends of the larger
base of a **trapezoid** are called the base angles (the angles LA and LB in Figure 1)
. A **trapezoid** is called ... It **means** that the triangle EBC is the isosceles triangle.

trans4mind.com/personal_development/mathematics/geometry/quadrilaterals.htm

The triangle creeps into this page because we need to know its area in order to
compute the area of a **trapezoid**. A quadrilateral with only two of its sides parallel
is called a trapezium, or **trapezoid**. There is a confusing difference in **meaning**
between the USA and elsewhere with these terms, where a trapezium in the USA
...

www.analyzemath.com/Geometry/trapezoid_problems.html

**Trapezoid** problems with detailed solutions. ... **trapezoid** problem 1. Solution to
Problem 1: Use the sine **definition** in a right triangle to find the height h of the
**trapezoid**. sin D = h / CD; Solve the above for h. h = CD * sin D = 2 * sin 40; Use
the formula of ... S = 0.5 * (**DO** + OC + CD) = 0.5 * (40 + 96 + 104) = 120 area =
sqrt [ s(s ...

www.thoughtco.com/definition-of-a-base-2312351

Jun 30, 2014 **...** **Definition** of a Base. Understand the **meaning** of base as it related to math.

www.girlsgetcurves.com/downloadable/GGC_Solution_Guide_Ch15.pdf

Let's rewrite this to say: A square satisfies the **definition** of an isosceles **trapezoid**.
Is this always, sometimes or never true? Well, a square is super-satisfying after
all… but the **trapezoid** is the one type of shape a square **does** not satisfy! That's
because **trapezoids** are only allowed to have one set of parallel sides, and
squares ...

mathspace.co/learn/world-of-maths/geometry/properties-of-2d-and-3d-shapes-and-solids-18523/properties-of-2d-shapes-1346

The word polygon comes from the Greek poly - **meaning** many and gonos -
**meaning** angles. ... 2 pairs of adjacent angles equal; A **trapezoid** (**trapezoid**) has
one pair of opposite sides parallel; An isosceles **trapezoid** (**trapezoid**) has one
pair of opposites sides equal; Diagonals of an isosceles **trapezoid** (**trapezoid**) are
equal ...

mathblog.com/reference/geometry/trapezoid

Students sometimes get confused when it comes to finding the area of a
**trapezoid**, simply because they **do** not know how to properly label the shape so
they can plug the right numbers into the ... In the US, the term **means** a
quadrilateral with one pair of parallel sides while in the UK, a **trapezoid** has no
parallel sides.

jd2718.org/2014/05/26/politicizing-the-trapezoid

May 26, 2014 **...** Of all the bad things ed reform is doing and has done, changing a **definition**
without discussion is not high on the list. And, in this case, its not that Coleman is
out to screw kids (he is, but **does** he care about **trapezoids**? He has millions of
children who he treats with disregard, what's a silly shape to him?)

www.dominatethegmat.com/2011/02/gmat-math-tip-trapezoids

Feb 22, 2011 **...** The formula for the area of a **trapezoid** is still A = b*h. The question is, which base
**do** you use? See, the problem with **trapezoids** is that they have two bases, each
of which is a different length. With rectangles, for example, it's easy — either base
you pick, by **definition**, is the same length as the parallel side ...