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/
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