A rhomboid is a parallelogram that is neither a rhombus nor a rectangle. The word rhomboid comes from the Greek word , which is transliterated as ‘rhomboeidis’. In The Elements, Euclid has this definition:
“Of quadrilateral figures….a rhomboid (is) that which has its opposite sides and angles equal to each other but is neither equilateral (http://planetmath.org/Equilateral) nor right-angled (http://planetmath.org/RightAngle).”
Below is a picture of a rhomboid.
The for the area of a rhomboid is the same as that for all parallelograms: If is the length of its and is the length of its , then .
|Date of creation||2013-03-22 17:12:35|
|Last modified on||2013-03-22 17:12:35|
|Last modified by||Wkbj79 (1863)|