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### Rhombus vs. Rhomboid

```Date: 08/27/2002 at 00:38:18
From: Emma Stewart
Subject: Geometry

On a recent version of Australia's "Who wants to be a Millionaire?"
they asked: What shape is the diamond in a set of playing cards?
a) rhomboid b) trapezoid c) trapezium d) rhombus.

I have worked out that the answer is a rhombus. What is a rhomboid? Is
it just the adjective from rhombus or is it a shape?
```

```
Date: 08/27/2002 at 09:06:31
From: Doctor Sarah
Subject: Re: Geometry

Hi Emma - thanks for writing to Dr. Math.

See Eric Weisstein's MathWorld:

Rhombus
http://mathworld.wolfram.com/Rhombus.html

"A quadrilateral with both pairs of opposite sides
parallel and all sides the same length, i.e.,
an equilateral parallelogram."

Rhomboid
http://mathworld.wolfram.com/Rhomboid.html

"A parallelogram in which angles are oblique and
adjacent sides are of unequal length."

- Doctor Sarah, The Math Forum
http://mathforum.org/dr.math/
```
Associated Topics:
College Definitions
College Triangles and Other Polygons
High School Definitions
High School Triangles and Other Polygons
Middle School Definitions
Middle School Triangles and Other Polygons

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